Question

what is the inverse of y=3x+12? How do i solve this?

Answer 1

set y to x and x to y and solve for y

Answer 2

so it would look lik x=3y+12?

Answer 3

yup

Answer 4

u must do the inverse of the operations to get what you started with

Answer 5

if you add 12 last and multiplied before that then to get back what u started... you should subtract 12 and divided by 3

Answer 6

Procedure for finding inverse
change f(x) to y
switch x and y
solve for y
the new function is the inverse!

Answer 7

So we got:
\[y=3x+12\]
Reverse x and y:
\[x=3y+12\]
Solve for y:
\[\begin{array}{rcl}x&=&3y+12\\x-12&=&3y\\\frac{x-12}3&=&y\\y&=&\frac{x-12}3\end{array}\]
Therefore its inverse is:
\[y=\frac{x-12}3\]