U6 FRQ Practice
Master Unit 6 AP Macro FRQs: balance of payments, FX market graphs, exchange-rate determinants, and twin deficits scored the AP-rubric way.
What you'll do in this lesson
A voice-first session with the Crimsora tutor on U6 FRQ Practice, then targeted practice and FRQs — with the tutor adapting to where you get stuck.
What this lesson covers
Unit 6 free-response questions reward students who can move fluidly between the foreign exchange market graph, the balance of payments accounts, and the AD-AS model. The exam rarely asks you to define a term in isolation; instead it chains ideas together — a change in interest rates shifts demand for a currency, which changes the exchange rate, which alters net exports, which shifts aggregate demand.
This guide shows you how to attack that chain under time pressure. You will learn to label FX graphs correctly, state the direction of every change, connect currency movements to output and price level, and phrase answers so a rubric reader can award every point. We assume you already know the underlying concepts from U6.1 through U6.6; here we focus purely on FRQ execution.
This guide shows you how to attack that chain under time pressure. You will learn to label FX graphs correctly, state the direction of every change, connect currency movements to output and price level, and phrase answers so a rubric reader can award every point. We assume you already know the underlying concepts from U6.1 through U6.6; here we focus purely on FRQ execution.
Anatomy of a Unit 6 FRQ
A typical Unit 6 free-response question opens with a scenario involving two countries and some initial shock — a change in interest rates, tastes, income, or price levels. It then asks you to draw or reference the foreign exchange market for one currency, determine the new equilibrium exchange rate, and trace effects into net exports and the domestic AD-AS model.
The grader scores discrete points, not overall elegance. Each point is tied to a specific, checkable claim: a correctly labeled axis, a correct shift direction, a correct final direction of the exchange rate, a correct effect on net exports, and a correct explanation linking two variables. Vague answers like "the currency changes" earn nothing.
Always answer in the currency the question specifies. If it asks about the market for pesos, your axes, shifts, and conclusions must all be about pesos, not dollars. Mixing perspectives is the single most common way students throw away points.
The grader scores discrete points, not overall elegance. Each point is tied to a specific, checkable claim: a correctly labeled axis, a correct shift direction, a correct final direction of the exchange rate, a correct effect on net exports, and a correct explanation linking two variables. Vague answers like "the currency changes" earn nothing.
| FRQ element | What earns the point |
|---|---|
| FX graph | Axes labeled "exchange rate (price of currency)" and "quantity of currency" |
| Shift | Correct curve (supply or demand) moving the correct direction |
| New rate | Explicit "appreciates" or "depreciates" |
| Spillover | Correct effect on net exports and AD |
Drawing and labeling the FX market
On the foreign exchange market graph, the vertical axis is the exchange rate expressed as the price of the currency in that market (for example, dollars per peso when you draw the market for pesos). The horizontal axis is the quantity of that currency. Demand slopes down, supply slopes up.
A rubric point for the graph requires correct labels and a correctly directed shift. If foreigners want more of a country's goods or assets, demand for that currency rises and the currency appreciates. If domestic residents want more foreign goods or assets, supply of the domestic currency rises and it depreciates.
A frequent misconception is treating appreciation and depreciation as movements along a curve. They are not — a determinant change shifts a curve, and the exchange rate moves to a new equilibrium. Another error is labeling the axis "price" without specifying it is the exchange rate, or drawing quantity of goods instead of quantity of currency.
When the prompt gives you a determinant — relative interest rates, relative income, tastes, relative price levels, or speculation — identify whether it changes demand or supply first, then state the direction. Write one sentence naming the curve, the direction it shifts, and the resulting appreciation or depreciation. That precision is exactly what converts effort into points.
A rubric point for the graph requires correct labels and a correctly directed shift. If foreigners want more of a country's goods or assets, demand for that currency rises and the currency appreciates. If domestic residents want more foreign goods or assets, supply of the domestic currency rises and it depreciates.
A frequent misconception is treating appreciation and depreciation as movements along a curve. They are not — a determinant change shifts a curve, and the exchange rate moves to a new equilibrium. Another error is labeling the axis "price" without specifying it is the exchange rate, or drawing quantity of goods instead of quantity of currency.
When the prompt gives you a determinant — relative interest rates, relative income, tastes, relative price levels, or speculation — identify whether it changes demand or supply first, then state the direction. Write one sentence naming the curve, the direction it shifts, and the resulting appreciation or depreciation. That precision is exactly what converts effort into points.
Connecting FX to AD-AS and the twin deficits
Unit 6 FRQs almost always push past the FX graph into real output. When a currency appreciates, that country's exports become more expensive abroad and imports become cheaper, so net exports fall, aggregate demand shifts left, and real GDP and the price level fall (all else equal). Depreciation does the reverse.
You must state this chain explicitly: appreciation, then higher relative export prices, then lower net exports, then leftward AD shift, then lower output. Skipping the middle links risks losing the explanation point even if your conclusion is right.
The twin deficits idea often appears in the final part. A large government budget deficit can raise domestic real interest rates, attracting foreign financial capital. That capital inflow increases demand for the domestic currency, causing appreciation, which worsens the trade (current account) deficit. So a budget deficit and a current account deficit tend to move together — the twin deficits.
Use this table as a mental checklist, but always write out the reasoning in words.
You must state this chain explicitly: appreciation, then higher relative export prices, then lower net exports, then leftward AD shift, then lower output. Skipping the middle links risks losing the explanation point even if your conclusion is right.
The twin deficits idea often appears in the final part. A large government budget deficit can raise domestic real interest rates, attracting foreign financial capital. That capital inflow increases demand for the domestic currency, causing appreciation, which worsens the trade (current account) deficit. So a budget deficit and a current account deficit tend to move together — the twin deficits.
| Shock | FX effect | NX effect | AD effect |
|---|---|---|---|
| Higher domestic interest rate | Currency appreciates | NX falls | AD shifts left |
| Rising foreign income | Currency appreciates | NX rises | AD shifts right |
| Higher domestic inflation | Currency depreciates | NX rises | AD shifts right |
Rubric strategy and time management
AP readers work from a rubric that lists each point with a required action verb. When a question says "draw," you must produce a graph; when it says "explain," you must show causation with the word "because" or an equivalent link; when it says "identify" or "calculate," a correct one-word or numeric answer suffices.
Write in complete, direction-specific sentences. Instead of "NX changes," write "Net exports decrease because the appreciated currency makes exports more expensive to foreigners." That single sentence can capture both a direction point and an explanation point.
Budget your time. A typical long FRQ deserves about 20 to 25 minutes; short ones about 12 to 15. Do the parts you know first, and never leave a graph blank — even a correctly labeled, correctly shifted graph without perfect equilibrium marks usually earns partial credit.
Finally, honor the carry-over rule. If a later part depends on an earlier answer you got wrong, you can still earn the later point as long as your reasoning is consistent with your earlier (incorrect) answer. This means you should never abandon a multi-part question just because you doubt part (a).
Write in complete, direction-specific sentences. Instead of "NX changes," write "Net exports decrease because the appreciated currency makes exports more expensive to foreigners." That single sentence can capture both a direction point and an explanation point.
Budget your time. A typical long FRQ deserves about 20 to 25 minutes; short ones about 12 to 15. Do the parts you know first, and never leave a graph blank — even a correctly labeled, correctly shifted graph without perfect equilibrium marks usually earns partial credit.
Finally, honor the carry-over rule. If a later part depends on an earlier answer you got wrong, you can still earn the later point as long as your reasoning is consistent with your earlier (incorrect) answer. This means you should never abandon a multi-part question just because you doubt part (a).
Key terms
- Appreciation.
- An increase in the value of a currency relative to another, meaning it can buy more foreign currency; shown as an upward move in the exchange rate on that currency's FX graph.
- Depreciation.
- A decrease in the value of a currency relative to another; makes the country's exports cheaper abroad and imports more expensive at home.
- Foreign exchange market.
- The market where currencies are traded; the vertical axis is the exchange rate (price of the currency) and the horizontal axis is the quantity of that currency.
- Net exports (NX).
- Exports minus imports; a component of aggregate demand that rises with depreciation and falls with appreciation, all else equal.
- Balance of payments.
- A record of a country's transactions with the rest of the world, split mainly into the current account and the financial (capital) account, which tend to offset each other.
- Twin deficits.
- The tendency for a government budget deficit and a current account deficit to occur together, linked through interest rates, capital inflows, and currency appreciation.
- Carry-over point.
- A rubric rule allowing a student to earn later-part credit when reasoning is consistent with an earlier answer, even if that earlier answer was incorrect.
Worked example
Assume the United States and Japan trade and have flexible exchange rates. The U.S. Federal Reserve raises the real interest rate in the United States. (a) Draw a correctly labeled graph of the foreign exchange market for the U.S. dollar and show the effect of the higher interest rate. (b) Indicate whether the dollar appreciates or depreciates. (c) Explain the effect on U.S. net exports. (d) Using an AD-AS graph, show and explain the effect on U.S. real GDP.
Start with part (a). Draw the FX market for the dollar with the vertical axis labeled "exchange rate (yen per dollar)" and the horizontal axis labeled "quantity of dollars." Draw downward-sloping demand and upward-sloping supply. A higher U.S. real interest rate makes U.S. financial assets more attractive to Japanese investors, so demand for dollars increases — shift the demand curve rightward from to . The new equilibrium exchange rate is higher.
For part (b), because the equilibrium yen-per-dollar rate rose, the dollar appreciates. State this in one explicit word: appreciates.
For part (c), an appreciated dollar makes U.S. exports more expensive for Japanese buyers and Japanese imports cheaper for Americans. Therefore U.S. net exports decrease. Write the causal link: net exports fall because appreciation raises the foreign-currency price of U.S. exports and lowers the domestic price of imports.
For part (d), draw an AD-AS graph with real GDP on the horizontal axis and the price level on the vertical axis. Since net exports are a component of aggregate demand, the fall in NX shifts AD leftward from to . Real GDP decreases and the aggregate price level decreases. Conclude by naming both results explicitly, since each may be a separate rubric point.
For part (b), because the equilibrium yen-per-dollar rate rose, the dollar appreciates. State this in one explicit word: appreciates.
For part (c), an appreciated dollar makes U.S. exports more expensive for Japanese buyers and Japanese imports cheaper for Americans. Therefore U.S. net exports decrease. Write the causal link: net exports fall because appreciation raises the foreign-currency price of U.S. exports and lowers the domestic price of imports.
For part (d), draw an AD-AS graph with real GDP on the horizontal axis and the price level on the vertical axis. Since net exports are a component of aggregate demand, the fall in NX shifts AD leftward from to . Real GDP decreases and the aggregate price level decreases. Conclude by naming both results explicitly, since each may be a separate rubric point.
Practice questions
In the foreign exchange market for the euro, an increase in European income that raises European demand for U.S. goods will most directly cause which of the following?
- An increase in the supply of euros, causing the euro to depreciate
- A decrease in the demand for euros, causing the euro to appreciate
- An increase in the demand for euros, causing the euro to appreciate
- A decrease in the supply of euros, causing the euro to depreciate
Answer: An increase in the supply of euros, causing the euro to depreciate
When Europeans buy more U.S. goods, they must supply euros to obtain dollars. This shifts the supply of euros rightward in the euro FX market, lowering the euro's value — the euro depreciates. Watch the perspective: the action is Europeans buying foreign goods, which is a supply-of-their-own-currency event, not a demand event.
A country runs a large government budget deficit that raises its domestic real interest rate. Explain, step by step, how this can lead to a larger current account deficit, and identify the concept this illustrates.
Answer: The higher real interest rate attracts foreign financial capital, increasing demand for the domestic currency and causing it to appreciate; appreciation makes exports more expensive and imports cheaper, reducing net exports and enlarging the current account deficit. This illustrates the twin deficits.
The rubric wants a complete causal chain: budget deficit, higher interest rate, capital inflow, higher currency demand, appreciation, falling net exports, and a wider current account deficit. Naming the twin deficits concept captures the identification point. Each link must be stated because graders reward causation, not just the endpoints.
The Mexican peso depreciates against the U.S. dollar. All else equal, describe the effect on Mexican net exports and on Mexican aggregate demand.
Answer: Mexican net exports increase and Mexican aggregate demand shifts rightward, raising real GDP and the price level.
Depreciation makes Mexican exports cheaper for foreigners and foreign imports more expensive for Mexicans, so net exports rise. Because net exports are a component of aggregate demand, AD shifts right, increasing both real output and the price level. State the direction for each variable explicitly to secure separate points.
FAQ
- How do I know whether to shift supply or demand in the FX market?
- Ask who is initiating the transaction. If foreigners want your currency (to buy your goods or assets), demand for your currency rises. If your residents want foreign currency (to buy foreign goods or assets), the supply of your currency rises. Identify the actor first, then the curve, then the direction.
- What labels does the FX graph need to earn the point?
- The vertical axis must be the exchange rate stated as the price of the currency shown (for example, yen per dollar in the dollar market), and the horizontal axis must be the quantity of that currency. You need a downward-sloping demand curve and an upward-sloping supply curve with a labeled equilibrium.
- If I get an early part wrong, do I lose all the connected points?
- Not necessarily. AP rubrics use carry-over scoring: later parts can earn credit if your reasoning is consistent with your earlier (even incorrect) answer. So keep working the chain logically rather than giving up on the whole question.
- How much time should I spend on a Unit 6 FRQ?
- Budget roughly 20 to 25 minutes for a long free-response question and about 12 to 15 for a short one. Answer the parts you are confident about first, always draw and label required graphs, and use direction-specific sentences so each rubric point is easy for the reader to award.
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