Which of the following graphs show a function which is one-to-one?

Select all correct answers.

Select all that apply:

A. A coordinate plane has a horizontal x-axis and vertical y-axis. A line that falls from left to right and crosses the negative x- axis and negative y- axis.

B. A coordinate plane has a horizontal x-axis and a vertical y-axis. From left to right, a curve falls in quadrant 2, crosses the negative x-axis, passes through the negative y-axis, and then continues to fall in quadrant 4.

C. A coordinate plane has a horizontal x-axis and a vertical y-axis. From left to right, a curve falls in quadrant 2 crossing the negative x-axis to a minimum in quadrant 4, rises crossing the negative y-axis to a maximum in quadrant 1, and then falls.

D. A coordinate plane has a horizontal x-axis and a vertical y-axis. A parabola that opens downward has its vertex in quadrant 4 and crosses the negative y-axis in quadrant 3.