Question

Determine if the function is one-to-one. A parabola is shown facing up with a vertex of 2.5, -6

Answer 1

ANSWER

It is not one-to-one function

EXPLANATION

A one-to-one function must pass the horizontal line test.

The graph described in the question looks like the one in the attachment.

A horizontal line drawn in red cuts the graph at more than one point.

Therefore the parabola shown facing up with a vertex $(2.5, -6)$ is not a one-to-one function.