Mastering the Vertical Line Test

What is the purpose of the vertical line test?

• To calculate the area under a curve

• To identify the x-intercept of a graph

• To find the slope of a line

• To determine if a relation is a function

What does it mean if a vertical line intersects a graph more than once?

• The graph is a parabola

• The graph represents a function

• The graph is a straight line

• The graph does not represent a function

In the function example, what color was used to draw the line?

• Green

• Blue

• Purple

• Red

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

In the function example, how many times does the vertical line intersect the graph?

• Once

• Twice

• Never

• Three times

What shape was used in the non-function example?

• Triangle

• Circle

• Square

• Rectangle

In the non-function example, what happens when a vertical line is drawn through the circle?

• It intersects the circle once

• It intersects the circle twice

• It does not intersect the circle

• It intersects the circle three times

In the additional examples, what color was used to draw the line in problem 14?

• Pink

• Blue

• Yellow

• Green

In problem 14, how many points does the vertical line intersect?

• One point

• Two points

• No points

• Three points

What is a key characteristic of a function according to the vertical line test?

• The graph is a circle

• The graph is a straight line

• A vertical line intersects the graph at only one point

• A vertical line intersects the graph at multiple points

In the final example, what was the result of the vertical line test?

• The graph was not a function

• The graph was a function

• The graph was a circle

• The graph was a parabola