Question

Explain what a vertical line test is and how it is used

Answer 1

a vertical line test is where you check and see if your line passes the same point twice. generally you check and see if your points have the same x coordinates, or go back on your x coordinates.

Explanation:

Answer 2

Vertical line test to check whether relation is a function

Used by drawing a vertical line on the graph

Explanation:

Vertical line test is a test used to check whether the graph of any relation is a function or not.

In vertical line test, a vertical line will be drawn on the graph and see whether the line meets the graph at two or more points.

When a vertical line crosses the graph at two or more points then it is not a function.