Question

What is the inverse of the given relation?

y = 3x + 9

A. y = 1/3x + 3


B. y = 3x - 3

C. y = 3x + 3

D. y = 1/3x - 3

Answer 1

Interchange the x and y and solve the resulting equation for y

Answer 2

i'm sorry i don't understand?

Answer 3

Put y where x is and x where y is.

Answer 4

x=3y+9

Answer 5

Now solve for y

Answer 6

how do i do that? subtract 9 from both sides?

Answer 7

so how would i set all that up?

Answer 8

First, you need to interchange x and y in the given relation
which would give you:

x = 3y + 9

now

x - 9 = 3y

or 3y = x- 9

Therefore, y = (1/3)x - (9/3)

y = (1/3)x - 3

Got it? :)

Answer 9

ohhh okay , thank you!! :)