Question

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

Answer 1

Answer:

Option 2: y = ±sqrt($\frac{x+10}{7}$)

Step-by-step explanation:

y = 7x^2 - 10

         To find the inverse of a function, you must swap the y and x.

x = 7y^2 - 10

         Now I will just simplify to have y by itself on the left hand side.

x + 10 = 7y^2

$\frac{x+10}{7}$=y^2

sqrt($\frac{x+10}{7}$)=±y

y = ±sqrt($\frac{x+10}{7}$)