Exploring Domain, Range, and the Vertical Line Test

What does it mean when a graph has an arrow pointing to the left at its end?

• The x-values extend to positive infinity

• The x-values extend to negative infinity

• The y-values extend to positive infinity

• The graph is not a function

What symbol is used to represent that a graph continues indefinitely in a direction?

• A bracket

• A dashed line

• A closed circle

• An arrow

If a graph has a true low point at y = -2, how is this typically represented?

• With an arrow

• With a dot

• With a parenthesis

• With a bracket

What does a closed circle on a graph typically indicate?

• The point is not included in the domain or range

• The graph has an infinite domain

• The point is included in the domain or range

• The graph is not a function

What indicates that a set of points is not a function?

• All y-values are different

• There are no arrows on the graph

• All x-values are different

• There are duplicate x-values

How can you determine the domain of a vertical line graph?

• By counting the arrows

• By counting the y-values

• By identifying the y-coordinate of the line

• By identifying the x-coordinate of the line

In a function, what must be true about the x-values?

• They must repeat

• They must not repeat

• They must be all positive

• They must be all negative

What does the vertical line test determine about a graph?

• The domain of the graph

• The continuity of the graph

• The range of the graph

• Whether it represents a function

If a vertical line intersects a graph at more than one point, what does this indicate?

• The graph is a function

• The graph has an infinite domain

• The graph has an infinite range

• The graph is not a function

What is the domain of a graph that has a vertical line at x = 2?

• y = 2

• y = -2

• x = 2

• x = -2