Which of the following statements is true for a one-to-one function.
A) A vertical line intersects the graph in more than one point.
B) A horizontal line intersects the graph in more than one point.
C) A horizontal line intersects the graph in at most one point.
D) none of these

Question

Quizplus · Accepted Answer

A one-to-one function has the property that each input value is associated with a unique output value. Thus, there cannot be more than one point on the graph of the function that corresponds to a given horizontal value. Therefore, a horizontal line can intersect the graph of a one-to-one function in at most one point.

Which of the Following Statements Is True for a One-To-One