Question

Determine if the function is one-to-one

Answer 1

A function is one-to-one if it passes the horizontal line test. It's like the vertical line test but with y-coordinates. Each y-coordinate can have exactly one x-coordinate.

Answer 2

Okay, so how would I test it?

Answer 3

If any horizontal line intercepts two points in the graph, it fails the horizontal line test.

Answer 4

I meant more than one point on the graph

Answer 5

Okay, so the answer is no right?

Answer 6

Correct, it doesn't pass the horizontal line test, so it's not one-to-one