How do you do inverse operation on a fraction ( y/3 ) = -6

Solution:

Given expression is

To find the inverse of y.

⇒

Do cross multiplication.

⇒ y = –6 × 3

⇒ y = –18

Inverse of y means reverse the function.

We know that inverse of y is .

⇒

Hence, inverse of y is

look at the picture.

y-intercept for the function on a picture is 4 → point (0, 4).

y-intercept for the function

is for x = 0. substitute:

y-intercept is 8 → point (0, 8).