Lesson 8: Domain and Range

What is the correct definition for domain?

• The set of x-values that make up the graph.

• The set of y-values that make up the graph.

What is the correct definition for range?

• The set of y-values that make up the graph.

• The set of x-values that make up the graph.

What is the domain of the graph?

• {x: -3 < x ≤ 2} or (-3 , 2]

• {x: -3 < x < 2} or (-3 , 2)

• {x: -3 ≤ x ≤ 2} or [-3 , 2]

What is the range of the graph?

• { y: -2 < y ≤ 3} or (-2, 3]

• { y: -2 < y < 3} or (-2, 3)

• { y: -2 ≤ y ≤ 3} or [-2, 3]

Which points are NOT part of the graph?

(-2,-1), (1, 3), (-3,-2), (2,3)

• (1,3) and (-3, -2) bc it is an open end point

• (1,3)

• (-3, -2) bc it is an open end point

Does the graph represent a function?

• Yes, it passes the vertical line test.

• No, it fails the vertical line test.

What is the domain of the graph?

• {x: -5 ≤ x < 4} or [-5 , 4)

• {x: -5 < x < 4} or (-5 , 4)

• {x: -5 ≤ x ≤ 4} or [-5 , 4]

What is the range of the graph?

• {y: -5 ≤ y < 4} or [-5 , 4)

• {y: -5 ≤ y ≤ 4} or [-5 , 4]

• {y: -5 < y < 4} or (-5 , 4)

If x = 1 then what is y = ?

• y = 1.5

• y = -1.5

• y = 2

• y = -2

If y = -5 then what is x = ?

• x = -2

• x = 2

• x = -3

• x = 3