Question

Find the inverse of y=7x-10. Is the inverse a function?

Answer 1

the inverse function is (x + 10)/7

Explanation:

y=7x-10

7x = y + 10

x = (y + 10)/7

therefore the inverse of the given function is (y + 10)/7

Answer 2

(x+7)/7 =y

Explanation:

The first step is to switch the variables

x=7y-10

Add the 10 to both sides

x=7y-10

+10 +10

x+10=7y

Divide both sides by 7

(x+7)/7 =y