AP®︎ Precalculus: Topic 1.3 Practice Test

Prepare for your quiz, test, or the AP exam with focused practice questions on Topic 1.3 of AP Precalculus – Rates of Change in Linear and Quadratic Functions.


Questions List

Topic 1.3

Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Q9
Q10
Q11
Q12
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Q14
Q15
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Question 1 Easy

Let f(x)=x2+2xf(x)=x^2+2x. What is the average rate of change of ff over [1,4][1,4]?

A2121
B−7-7
C2424
D77

What You’re Being Tested On:

Explore the learning objectives taken directly from the College Board’s AP® Precalculus Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Topic 1.3: Rates of Change in Linear and Quadratic Functions

Learning Objective: 1.3.A

Determine the average rates of change for sequences and functions, including linear, quadratic, and other function types.

Essential Knowledge: 1.3.A.1

For a linear function, the average rate of change over any length input-value interval is constant.

Essential Knowledge: 1.3.A.2

For a quadratic function, the average rates of change over consecutive equal-length input-value intervals can be given by a linear function.

Essential Knowledge: 1.3.A.3

The average rate of change of a function ff over the closed interval [a,b][a, b] is the slope of the secant line from the point (a,f(a))(a, f(a)) to (b,f(b))(b, f(b)).

Learning Objective: 1.3.B

Determine the change in the average rates of change for linear, quadratic, and other function types.

Essential Knowledge: 1.3.B.1

For a linear function, since the average rates of change over consecutive equal-length input-value intervals can be given by a constant function, these average rates of change for a linear function are changing at a rate of zero.

Essential Knowledge: 1.3.B.2

For a quadratic function, since the average rates of change over consecutive equal-length input-value intervals can be given by a linear function, these average rates of change for a quadratic function are changing at a constant rate.

Essential Knowledge: 1.3.B.3

When the average rate of change over equal-length input-value intervals is increasing for all small-length intervals, the graph of the function is concave up. When the average rate of change over equal-length input-value intervals is decreasing for all small-length intervals, the graph of the function is concave down.