Test - Properties of Functions

The set of ordered pairs represents a function.

{(-6, 11), (4, 22), (-3, 19), (6, 1), (_, 8)}

Which value could NOT be the missing x-value in the last ordered pair?

• 1

• -22

• -3

• 11

Tags

CCSS.8.F.A.1

Given the function f(x) = 7(3 - x) + 5, which of the following is a true statement?

• f(9) = -42

• f(-3) = 5

• f(-4) = 54

• f(3) = 0

Tags

CCSS.HSF.IF.A.2

Which of the following functions has a range of y ≤ 5?

• 
• 
• 
• 

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

A telephone company charges its customers per minute to make long-distance calls. The cost, c, can be represented by c = .12m, where m is the number of minutes. Which type of number is most reasonable for the domain of the situation?

• All integers

• All whole numbers

• All real numbers

• All of the above

Which of the following best describes the domain of the function on the graph?

• -1 ≤ x ≤ -9

• -5 ≤ x ≤ 45

• -5 < x < 45

• - 10 ≤ y ≤ 25

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

If g(x) = (x + 5)² - 12, what is the value of g(-7)?

(a)  

Tags

CCSS.HSF.IF.A.2

Summer and Mia created the graphs shown. Whose graph represents a function?

• Summer's graph only

• Mia's graph only

• Both graphs represent functions

• Neither graph represents a function

Find the range of the graph.

• 2 < y ≤ 18

• 12 < y ≤ 18

• 2 ≤ y < 18

• All real numbers

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Which of the following is NOT true about f(x) = 20?

• The domain is x = 20.

• The range is y = 20

• The graph of the function is a straight line.

• The domain is all real numbers.

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

Peter launched a water balloon from the top of a building that is 15 yards tall. The graph shows the height of the water balloon as a function of x, the distance from the building in yards. Which best represents the domain of the situation?

• 15 ≤ x ≤ 30

• 0 ≤ x ≤ 8

• 0 ≤ y ≤ 30

• All real numbers