Question

Using the function g(x) = -2x + 5, what would the input need to be for an output of -5?

A. 5
B. -5
C. 0
D. 15

Answer 1

A. 5

Explanation:

g(x) = - 2x + 5

Then

g(x) = - 5

- 2x + 5 = - 5

- 2x = - 5 - 5

- 2x = - 10

x = 10 / 2

x = 5