HUNTERTUTORING
← AP
Get startedBook tutoring

Exam Strategy

Open PDF

Readiness Check

You are ready when you can:

  • State right/left from x(t) and up/down from y(t) on an interval.
  • Explain that direction can change with t.
  • Compare two parametrizations of the same curve.
  • Compute average ROC and secant slope with justification.

Course vs AP Exam

Course scope only (Unit 4 additional topic; not on the AP Exam). These skills still matter for Unit 4 coursework and readiness for 4.4.

Tactics (course assessments)

1. Write t1, t2 and evaluate x, y at both ends. 2. Sign of Delta x --> right/left; sign of Delta y --> up/down. 3. Average ROC: (component change) / (t2 - t1). 4. Secant slope = (avg ROC y) / (avg ROC x) when avg ROC x != 0. 5. Support answers with table values or short rationale (3.C).

Common Traps

  • Swapping x and y direction rules.
  • Using Delta x / Delta t as secant slope in the xy-plane.
  • Dividing when average ROC of x is zero.
  • Ignoring that direction depends on the t-interval chosen.

Quick Checklist

  • [ ] Direction from x and y analyzed separately
  • [ ] Interval endpoints evaluated
  • [ ] Average ROC computed correctly
  • [ ] Secant slope only when avg ROC x != 0
  • [ ] Conclusion supported with data

For your personal study only. Copying, printing, screenshotting, or sharing this material is not permitted and may result in loss of access.

Back to 4.3