Question

Is this function one-to-one? How do you know?

A) Yes, because it passes the vertical line test.
B) No, because it passes the vertical line test.

Answer 1

The function is one-to-one if it passes the vertical line test, which is when every vertical line intersects the graph at most once.

Step-by-step explanation:

The function is one-to-one if every element in the domain is paired with a unique element in the range. One way to test for one-to-one is to use the vertical line test. If all vertical lines intersect the graph at most once, then the function is one-to-one. Therefore, the correct answer is A) Yes, because it passes the vertical line test.