Chapter 2 Test Review

What is the domain and range of the relation {(3, 6), (4, 5), (-1, 6), (-3, -2)}? Is it a function?

• Domain: {3, 4, -1, -3}, Range: {6, 5, -2}

• Domain: {6, 5, 6, -2}, Range: {3, 4, -1, -3}

• Domain: {-2, 5, 6}, Range: {-3, -1, 3, 4}

• Domain: all real numbers, Range: all real numbers

• 12

• 30

• 14

• 18

A cable company charges a monthly fee of $24.50 for cable service. There is an additional monthly fee of $3 for each premium channel. George has cable service with 4 premium channels. What is the monthly cost of George’s cable service?

• $36.50

• $75.50

• $38.50

• $27.50

Mr. Reynolds is a car salesman. He makes a salary of $55,000 a year and earns a commission of 1/12 of his total sales for the year. This year, Mr. Reynolds has a sales total of $295,200. What are Mr. Reynolds’s total earnings for the year?

• $79,600

• $350,200

• $29,183

• $110,000

Write the equation of the line passing through (-5, -7) and (0, 10).

• y = 10x - 2

• y = -2x + 10

Does the set of ordered pairs represent a function?

{(3, 6), (4, 5), (-1, 6), (-3, -2)}

• Yes

• No

• Sometimes

Does the graph represent a function?

• Yes

• No

• Sometimes

Does the graph represent a function?

• Yes

• No

• Sometimes

• -3

• 17

• -7

• 7

Write the equation of the line shown.

• y = 2x - 1

• y = -2x + 2

• y = 2x + 2

• y = -2x - 1