Question

Does this graph represent a function? Why or why not?

A. No, because it is not a straight line.
B.Yes because it passes the vertical line test.
C.No because it fails the vertical line test.
D. Yes because it passes the horizontal line test.

Answer 1

Answer: B. Yes because it passes the vertical line test.

Step-by-step explanation:

Since it is not possible to draw a single vertical line through more than one point on the red curve, this means that the curve passes the vertical line test. This means that any input x leads to exactly one output y. So that's why we have a function here.

Side note: The function doesn't pass the horizontal line test, so this function is not one-to-one.