math-8 exam [e-1hyetd] relations and functions

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MATH-8 Relations and Functions Exam not valid for Paper Pencil Test Sessions [Exam ID:1HYETD 1 As a babysitter, you earn $5 for every hour you babysit. Which is the dependent variable? A Number of hours you babysit B Number of children you babysit C Amount of money you earn per hour D Total amount of money you earn 2 Which is the independent variable in the following equation? y = 3x + 9 A y B x C 3 D 9 3 Identify the values of the domain for the following relation: A {-2, 0, 1, 3} B {-3, -2, 0, 1, 2} C {-2, -1, 0, 1, 2, 3} D {-3, 0, 1, 2}

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Page 1: MATH-8 Exam [E-1HYETD] Relations and Functions

MATH-8

Relations and Functions

Exam not valid for Paper Pencil Test Sessions

[Exam ID:1HYETD

1 As a babysitter, you earn $5 for every hour you babysit.  Which is the dependent variable?A Number of hours you babysitB Number of children you babysitC Amount of money you earn per hourD Total amount of money you earn

2 Which is the independent variable in the following equation? 

 y = 3x + 9

A yB xC 3D 9

3 Identify the values of the domain for the following relation: 

 

 A {-2, 0, 1, 3}B {-3, -2, 0, 1, 2}C {-2, -1, 0, 1, 2, 3}D {-3, 0, 1, 2}

Page 2: MATH-8 Exam [E-1HYETD] Relations and Functions

4 Which set of ordered pairs is a function?

A {(3,2), (4,1), (3,5), (1,4)}B {(2,1), (2,2), (3,4), (5,6)}C {(-2,-1), (2,2), (3,4), (2,5)}D {(1,2), (2,1), (3,2), (4,4)}

5 Which set of ordered pairs is not a function?

A {(1,4), (2,3), (3,2), (4,3)}B {(2,3), (3,2), (4,4), (5,2)}C {(-2,3), (4,1), (2,-1), (1,5)}D {(-2,3), (1,4), (-2,-1), (1,5)}

6 Mary can make 5 hairbows every hour. 

 Which is the independent variable?A Total number of hairbows Mary madeB Number of hairbows made per hourC Number of hours Mary made bowsD Price of each hairbow

7 Identify the values for the domain of the function.  

 A {-2, -1, 0, 1, 2}B {(1,-2),(-1,-1),(2,0),(1,1), (2, 2)}C {-1,1,2}D {(-2,1),(-1,-1),(0,2),(1,1), (2, 2)}

Page 3: MATH-8 Exam [E-1HYETD] Relations and Functions

8 List the range for the following function. 

 {(2, 3), (4, 5), (3, 4), (7, 8)}

A {3, 4, 5, 8}B {2, 3, 4, 7}C {2, 3, 4, 5, 7, 8}D { 2, 3, 3, 4, 4, 5, 7, 8}

9 Click and drag the selections to the boxes.

Match the linear equations to the appropriate graphs.

y = - x + 31 3 

y =  x + 21 4 

y = -6x + 3

y = 2x + 5

Page 4: MATH-8 Exam [E-1HYETD] Relations and Functions

10 Identify the values of the range for the following relation: 

 {(2, 3), (5,7), (7, 9), (4, 8)}

A {2, 5, 7, 4}B {2, 3, 4, 8}C {2, 8}D {3, 7, 9, 8}

11 Click on a box to select a correct answer. You must choose all the correct answers.

Select each ordered pair that is a solution to this linear equation.  

(-4, -7) (-8, 15) (4, -9)

(0, 2) (0, -1) (6, 13)

12 Identify the range for the following relation: 

 

 A {-2, -1, 3, 5}B {-1, 0, 4, 7}C {-2, -1, 0, 3, 4, 5, 7}D {0, 1, 4, 7}

Page 5: MATH-8 Exam [E-1HYETD] Relations and Functions

13 Click on the box you want to select. You must select all correct answers.

 Identify all the correct ordered pair(s) that would be solution(s) to the following linear equation.  y = -2x + 3

(-2, 7)

(2, -1)

(-4, 5)

(4, -5)

(0, 0)

14 Click on a box to choose each table you want to select. You must select all correct examples.

Which table(s) could NOT be used to graph y=- x1 2 

Page 6: MATH-8 Exam [E-1HYETD] Relations and Functions

15 Type your answer in the box. 

 

The slope of the line above is .

16 Click on a box to choose the answer. You must select all correct answers.

Click on the numbers that are included in the domain of the following relation: {(-3,5), (-2,5), (-2,7), (0,4), (5,8)}.

8450-2

17 Click on a box to choose each ordered pair that is a solution. You must select all correct ordered pairs.

Select each ordered pair that is a solution to the following linear equation: 

(2,-5) (-2,-5) (3,-7)

(0,-1) (-2,3) (0,1)

Page 7: MATH-8 Exam [E-1HYETD] Relations and Functions

18 Click on a box to choose each answer. You must select all correct answers.

A relation is graphed as shown.  

  Choose all the values that are in the domain of this relation.  

463125

19 Identify and drag to the center of the graph the equation that matches the linear 

graph below.

y = 2x - 7

Page 8: MATH-8 Exam [E-1HYETD] Relations and Functions

20 In which table do all the ordered pairs make the following equation true? 

  x + 3y = 15

A

B

C

D

21 Which of these equations represents the table of values? 

 

A y = -xB y = 3x + 3C y = x + 7D y = 2x + 6

Page 9: MATH-8 Exam [E-1HYETD] Relations and Functions

22 Which graph contains all the ordered pairs in this table? 

 

A C

B D

23 Which table contains only points that lie on the line of the equation y = 6x - 6 ?

A

B

C

D

Page 10: MATH-8 Exam [E-1HYETD] Relations and Functions

24 Which graph contains the ordered pairs listed in the table? 

 

A C

B D

25

  If the line containing the points in the table is plotted on a coordinate system, what does the graph look like?

A C

B D

Page 11: MATH-8 Exam [E-1HYETD] Relations and Functions

26

  Which graph best represents the line defined by the table of ordered pairs?

A C

B D

Page 12: MATH-8 Exam [E-1HYETD] Relations and Functions

27 Which graph contains the ordered pairs in the table? 

 

A C

B D

28 Which rule represents the relation shown in the table? 

  

A y = x - 1B y = x + 3C y = 2x - 3D y = 2x + 3

Page 13: MATH-8 Exam [E-1HYETD] Relations and Functions

29 The following set of ordered pairs of the form (x ,y ) lie on the graph of a function of x. 

 {(0,-1), (1, 2), (2, 5), (3, 8)} 

 Which equation describes the function?A y = 3x - 1B y = x + 5C y = x - 1D y = 2x + 1

30 To graph the equation y = 3x - 7, Renita created the following table of values. 

 

  Which y -value corresponds to 7 ?A 21B 28C 14D -4

Page 14: MATH-8 Exam [E-1HYETD] Relations and Functions

31 The table shows the number of hours it takes to mow a certain number of lawns. 

 

  Which graph best represents the relationship shown in the table?

A C

B D

32 Juan earns a flat fee of $150 plus $20 for every hour he works decorating a house. 

Which graph correctly displays Juan’s earnings?

A C

B D

Page 15: MATH-8 Exam [E-1HYETD] Relations and Functions

33 Which of the following tables of values is true for the equation 

y = 3(x - 3)?

A

B

C

D

34

Which table contains only points that lie on the line represented by y =  x - 6 ?2 3 

A C

B D

Page 16: MATH-8 Exam [E-1HYETD] Relations and Functions

35 Which equation corresponds to the graph? 

A y = - x - 31 4 

B y =  x - 31 4 

C y = 4x - 3D y = -3x - 4