Understanding Graphs: Increasing, Decreasing, and Constant Intervals

What test is used to determine if a graph represents a function?

• Intercept test

• Slope test

• Vertical line test

• Horizontal line test

What does the domain of a graph represent?

• The y-values used to generate the graph

• The intercepts of the graph

• The x-values used to generate the graph

• The slope of the graph

What is the range of a graph?

• The set of all x-values

• The set of all y-values

• The slope of the graph

• The intercepts of the graph

How do you determine if a graph is increasing?

• If it forms a loop

• If it goes up from left to right

• If it is flat from left to right

• If it goes down from left to right

What does it mean if a graph is constant?

• The graph remains flat from left to right

• The graph goes up from left to right

• The graph goes down from left to right

• The graph forms a loop

Between which x-values is the graph increasing in the first interval?

• From -∞ to -3

• From -3 to 1

• From -3 to 3

• From -3 to -1

What symbol is used to denote the union of intervals?

• ∩

• ∪

• ∅

• ∞

Where is the graph decreasing?

• From 5 to 7

• From 3 to 5

• From 1 to 3

• From -3 to 1

At which x-value does the graph become constant?

• At x = 3

• At x = 1

• At x = 7

• At x = 5

What is a common mistake when identifying intervals?

• Using decimals

• Using fractions

• Using negative numbers

• Using y-values instead of x-values