Question

1. the vertical line test is used to:

a. calculate the output value of a function
b. determine if a graph is a straight line
c. check if a graph represents a function
d. find the rate of change

Explanation:

The vertical line test is a fundamental method in mathematics where you draw vertical lines across a graph. If any vertical line intersects the graph more than once, the graph does not represent a function, since a function can only have one output for each input.

Answer:

c. Check if a graph represents a function