Math / Algebra

Can you check my work? Thank you :)

1. The Domain of a function F is the same as the range of F^-1 (True or False?)

Answer: True.

2. Does the function y = |x-2| have an inverse? Select the best answer.

A. Yes, it passes the horizontal line test.
B. No, it does not pass the horizontal line test.
C. It's inverse is y = |x| - 2
D. It's inverse is y = |x+2|

Answer: B

3. What is the inverse of: x + 4 ?

A.x - 4
B. x + 2
C.y + 4
D. y - 2

Answer: A

4. Which statement describe the Horizontal Line Test?

A. If any horizontal line touches the function more than once, the function has an inverse.
B. If any horizontal line touches the function more than once, the function is not a function.
C. If any horizontal line touches the function only once, the function has an inverse.
D. If any horizontal line touches the function only once, the function always has real roots.

Answer: C

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