Question

inverse of 5x/x+2

Answer 1

switch places with your y and x and solve for y, make sense?

Answer 2

it seems so simple but every time i try it i get something really ugly

Answer 3

\[f(x)=\frac{ 5x }{ x+2 }\to x=\frac{ 5y }{ y+2 }\]
now solve for y

Answer 4

thats what i did and i got to the point where i get x(y+2)=5y but then im not sure what to do once im there

Answer 5

lonnie?

Answer 6

distribute the x.
\[xy+2x=5y \
then finish

Answer 7

\[xy+2x=5y \to xy-5y=-2x \to y(x-5)=-2x\]
the last step is simple.

Answer 8

-2x/x-5?

Answer 9

yes sir.

Answer 10

thanks again