Exploring Domain and Range Notations

What is the domain of a function?

• The lowest point of the graph

• The set of X values

• The highest point of the graph

• The set of Y values

How do you determine the domain from a graph?

• Look at the Y-axis

• Find the highest point

• Find the lowest point

• Look at the X-axis

What is the range of a function?

• The set of X values

• The right-hand side of the graph

• The set of Y values

• The left-hand side of the graph

What is the first step in determining the range from a graph?

• Find the right-hand side

• Find the highest point

• Find the left-hand side

• Find the lowest point

In interval notation, what do brackets indicate?

• Commas

• Closed circles

• Parentheses

• Open circles

How would you write the domain 0 through 7 in interval notation if both endpoints are included?

• (0, 7]

• [0, 7)

• (0, 7)

• [0, 7]

What symbols are used in set notation for closed circles?

• ≤

• ≥

• >

• <

How would you write the range -2 through 4 in set notation if both endpoints are included?

• -2 > y > 4

• -2 ≤ y ≤ 4

• -2 ≥ y ≥ 4

• -2 < y < 4

In the example multiple-choice question, what is the range of the function?

• 0 to 5

• -2 to 5

• 0 to 7

• -2 to 4

Which answer choices can be eliminated when determining the range of a function?

• Choices with X values

• Choices with positive values

• Choices with Y values

• Choices with negative values