Skip to content
Marlow Works

AP Macroeconomics / Unit 3

Unit 3 · 17–27%

National Income and Price Determination

Aggregate demand and aggregate supply explain short-run output and the price level.

Start first lessonUnit practice

Topics

  • Aggregate demand
  • Short-run and long-run aggregate supply
  • Short-run equilibrium
  • Gaps and self-correction
  • Fiscal policy in AD-AS

Lessons

Key terms

Original practice

Marlow Works questions. If this unit does not have its own items yet, you will see other questions from the same course.

1 of 1National Income and Price Determination · medium · short answer

Using AD–AS reasoning, what happens to aggregate demand and the short-run price level if government purchases increase while short-run aggregate supply is unchanged?

Original Marlow Works item — not a College Board question.

Take your time—this is practice, not a test.

Review checklist

  1. 01Label AD, SRAS, LRAS, price level, and real GDP.
  2. 02Name the spender or cost shock that shifted a curve.
  3. 03State what happens to output and the price level after the shift.

Related resources

External links with reuse status. Marlow Works is independent and does not copy restricted exam or textbook material.

  • Official / link only

    AP Macroeconomics course page

    Official six-unit framework for national income and policy models.

    College Board · All rights reserved · accessed 2026-10-01

    Open source

  • Official / link only

    FRED economic data

    Federal Reserve economic data. Terms vary by series; do not scrape or ingest.

    Federal Reserve Bank of St. Louis · Varies by series · accessed 2026-10-01

    Open source