Question

help inverse equation

Answer 1

To find the inverse of an equation, simply change the x variables to y's and the y's to x's. Then solve again for y.

In your case, you're given the equation
y=8x^3 - 3
Flip the x's and y's: x = 8y^3 - 3 and now solve for y.
x+3 = 8y^3
(x+3)/8 = y^3
[(x+3)/8]^(1/3) = y

so the answer should be the first choice.