Question

F(x)=2x+5 find the inverse of f(x)

Answer 1

(x-5)/2

Explanation:

To find an inverse, swap x and y, then solve for y using reverse of PEMDAS, so in this case, subtracting 5 from both sides first, then dividing both sides by 2 to get y by itself.

y=2x+5

x=2y+5

x-5=2y

(x-5)/2=y