2026, Question 3 · Modeling a Periodic Context · 6 points
Sinusoidal height of a point on a waterwheel
Give coordinates for five labeled points on the graph of a waterwheel point's height, find the constants of a sine model, and describe the sign, direction, concavity and rate of change of the function between two of the points.
1 Read the question
The question is College Board's, from the 2026 exam. It starts on page 6 of the PDF.
2 Write your answer
Answer each part the way you would on the exam, in full sentences, with your work shown. Your writing saves as you type.
3 Score it
Score your answer against College Board's scoring guidelines, one point at a time. Give yourself a point only when your answer says what the guideline asks for.
Scoring guidelines (PDF, page 11)
Question, scoring guidelines and Chief Reader report: College Board. The title and summary are ours.