1.4 Inverse of Quadratics Scholars

What does it mean to find the inverse of a function?

• the x's and y's are switched
• the x's and y's are divided by 2
• the x's and y's are made negative
• the x's and y's are the same

The inverse of the function f(x) is written as ...

• f ^-1(x)
• f ²(x)
• f '(x)
• f ⁺(x)

Restricting the domain is another way to say restricting the...

• y-values

• x-values

• Odd numbers

• Even numbers

A function has an inverse function if...

• It passes the Vertical Line Test and the Horizontal Line Test.

• It fails the Horizontal Line Test

• It passes only the Horizontal Line Test

• It fails the Vertical Line Test

Use the horizontal line test to determine whether the inverse of the graph is a function.

• Function

• Not a Function

Which function would need a domain restriction to ensure that its inverse is a function?

To which intervals could we restrict the domain of f(x) to make it an invertible function? Choose all answers that apply.

• [-4, 4]

• [0, inf)

• (-inf, 0]

• none of the above