Question

Sample Response: If the graph passes the horizontal-line test, then the function is one-to-one. Functions that are one-to-one have inverses that are also functions. Therefore, the inverse is a function.

Compare your response to the sample response above. What did you include in your explanation?

a reference to the horizontal-line test

a statement that the function is one-to-one

the conclusion that the inverse is a function

Answer 1

I included all three:
- a reference to the horizontal-line test — yes
- a statement that the function is one-to-one — yes
- the conclusion that the inverse is a function — yes