Question

Which equation is the inverse of y=7x^2 - 10

Answer 1

Depends on domain of x, could be

-√(y+10)/7; √(y+10)/7 or no solutions

Explanation:

You need to solve it for x:

y=7x^2-10

7x^2=y+10

x^2=(y+10)/7

In order for this equation to have an inverse, you need to check the domain of x. There needs to be only one solution for x^2=(y+10)/7 - either positive or negative, depending on the domain.