CAASPP Functions

Question 1

What defines a function in mathematics?

Accepted Answer

Each input has exactly one output

Answer

Each output has exactly one input

Answer

All inputs and outputs are equal

Answer

The graph is always a straight line

Question 2

Which of the following represents a linear function?

Accepted Answer

y = 2x + 3

Answer

y = x²

Answer

y = √x

Answer

y = 1/x

Question 3

If f(x) = 3x − 5, what is f(4)?

Accepted Answer

7

Answer

12

Answer

17

Answer

−17

Question 4

Which test determines whether a graph represents a function?

Accepted Answer

Vertical line test

Answer

Horizontal line test

Answer

Diagonal line test

Answer

Origin symmetry test

Question 5

A table shows x: 1, 2, 3, 4 and y: 2, 4, 6, 8. What type of function does this represent?

Accepted Answer

Linear

Answer

Quadratic

Answer

Exponential

Answer

Absolute value

Question 6

What is the slope of the linear function f(x) = −2x + 7?

Accepted Answer

−2

Answer

7

Answer

−7

Answer

2

Question 7

Which of the following sets of ordered pairs is NOT a function?

Accepted Answer

{(1,2), (1,3), (2,4)}

Answer

{(1,2), (2,3), (3,4)}

Answer

{(2,1), (3,1), (4,1)}

Answer

{(0,0), (1,1), (2,2)}