Question

Which equation can be simplified to find the inverse of y = 2x2?

1/y=2x^2
y=1/2x^2
-y=1/2x^2
x=2y^2

Answer 1

Option D

Explanation:

• y=2x²

Interchange x and y

• x=2y²

Hence option D is correct

• y²=x/2
• y=√x/2

Answer 2

• D. x = 2y²

Explanation:

The step in working out the inverse is to swap over the variables.

If we apply same to given equation, we'll have:

• y = 2x² → x = 2y²

It gives us the option D