PAPA PAPA Algebra & Functions 2

Question 1

What is the y-intercept of the equation y = 3x − 5?

Accepted Answer

−5

Answer

In y = mx + b form, b is the y-intercept; here b = −5.

Question 2

Which equation has x = 4 as its solution?

Accepted Answer

3x − 2 = 10

Answer

3(4) − 2 = 12 − 2 = 10, confirming x = 4.

Question 3

Simplify: 4x + 3 − 2x + 7

Accepted Answer

2x + 10

Answer

Combine like terms: (4x − 2x) + (3 + 7) = 2x + 10.

Question 4

If y = x + 3 and x = 5, what is y?

Accepted Answer

8

Answer

y = 5 + 3 = 8.

Question 5

Which of the following is NOT a function?

Accepted Answer

x = 4 (vertical line)

Answer

A vertical line fails the vertical line test because it assigns multiple y-values to a single x-value.

(PAPA) Pre-service Academic Performance Assessment Practice Test