Question

3. Using the equation y = -2x + 5, what would the input need to be for an output of -5?

a. 15
b. -5
c. 5
d. 0

Answer 1

C 5

Explanation:

y is the output and x is the input

y = -2x + 5

-5 = -2x + 5 Subtract 5 from boht sides

-5 - 5 = -2x + 5 - 5

-10 = -2y Divide both sides by -2

`(-10)/(-2)` =
`(-2y)/(-2)`

5 = y