Question

Which of these functions has an inverse function? Select all that apply.

y = x
y = x^2
y = x^3
y = x^4

Answer 1

Think of it as the x and y coordinates interchanging with another, so y = x^2 (2, 4), (3,9)..etc the inverse is just (4,2), (9,3) but then you have to note whether or not if it's a inverse function, you can do this by plotting the points and using the vertical line test, this is an easy visualization :).

Hope that helps!

Answer 2

ohhhhhh that helps greatly thank you