Question

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

5

0

15

Will mark

Answer 1

5

Explanation:

g(x) = - 2x + 5

Then

g(x) = - 5

- 2x + 5 = - 5

- 2x = - 5 - 5

- 2x = - 10

x = 10 / 2

x = 5

Answer 2

Explanation:

Out put = g(x) = -5 ==> -5 = -2x + 5 ==> x = input = 5