Question

A function follows the rule y = -75 - 5x. When the function's output is 25, the equation is 25 = -75 - 5x. What is the function input when the output is 25? 20 -20 10 -10

Answer 1

-20

Explanation:

Answer 2

-20

Explanation:

add 75 to both sides.

25+75=-5x

2 Simplify 25+75 to 100.

100=-5x 100=−5x

3 Divide both sides by -5.

​5/​100

=x

4 Simplify

​5/​100

​to 20.

−20=x

5 Switch sides.

x=−20