Determining Graphs as Functions Using the Vertical Line Test

What is the purpose of the vertical line test?

• To determine if a graph is a function

• To identify the x-intercepts of a graph

• To find the slope of a line

• To calculate the area under a curve

Why does the vertical line test work?

• Because it calculates the derivative of the function

• Because it measures the distance between points

• Because every x value can only have one specific y value

• Because every y value can have multiple x values

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

• The graph is a quadratic function

• The graph is a linear function

• The graph is not a function

• The graph is a function

When applying the vertical line test to a diagonal line, what do you observe?

• The line is crossed multiple times

• The line is never crossed

• The line is crossed only once

• The line is crossed at the origin

Why is a circle not considered a function?

• Because it has no y values

• Because a vertical line crosses it more than once

• Because it has no x values

• Because it is a closed shape

What is the result of the vertical line test on a standard parabola?

• It crosses the parabola only once

• It crosses the parabola at the vertex

• It crosses the parabola multiple times

• It never crosses the parabola

What happens when you apply the vertical line test to a sideways parabola?

• It crosses the parabola only once

• It crosses the parabola multiple times

• It crosses the parabola at the vertex

• It never crosses the parabola

What is the outcome of the vertical line test on a horizontal line?

• It crosses the line multiple times

• It never crosses the line

• It crosses the line only once

• It crosses the line at the origin

Why is a vertical line not considered a function?

• Because it is a straight line

• Because a vertical line crosses it more than once

• Because it has no y values

• Because it has no x values

Tags

CCSS.8.F.A.1

What is the result of the vertical line test on an ellipse?

• It crosses the ellipse at the center

• It crosses the ellipse multiple times

• It never crosses the ellipse

• It crosses the ellipse only once