Quiz about Exam Reviewer for Math8

Question 1

Which term best describes the graph of the equation y = 1?

Accepted Answer

constant

Answer

positive

Answer

increasing

Answer

decreasing

Question 2

What will be the expected grade if a student will work for 4 hours?

Accepted Answer

about 85

Answer

about 75

Answer

about 80

Answer

about 90

Question 3

Complete the step 1 in solving systems using elimination method.

Accepted Answer

4y + 0 = 17

Answer

2y - 10x = -23

Answer

4y + 10x = 23

Answer

y = 17

Question 4

In solving systems using substitution, which of the following expression should be in the blank?

Accepted Answer

-3x + 35

Answer

3x - 35

Answer

-3x - 35

Answer

3x + 35

Question 5

What is the slope of the equation 5x + y - 5 = 0

Accepted Answer

-5

Answer

0

Answer

5

Answer

10

Question 6

What is the solution in the given graph of the system?

Accepted Answer

The solution is (-4, 3)

Answer

There are infinitely many solutions.

Answer

There is no solution.

Answer

The solution is (3, -4)

Question 7

Identify the graph that displays no association.

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 8

Identify the graph that displays a strong positive association.

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 9

Which of the following statements is an example of a negative association?

Accepted Answer

Number of people who carpool to work and money spent on gas.

Answer

Food consumption with regards to the number of children in a family.

Answer

Time spent driving and the distance traveled.

Answer

Population in a city and the number of schools.

Question 10

Which trend line is the best model of the data?

Accepted Answer

Line w

Answer

Line h

Answer

Line p

Answer

Line g

Question 11

The graph below shows the fuel in klara car tank over the distance traveled while driving. Describe the relationship between the two quantities.

Accepted Answer

As the distance increases, the number of fuel in the tank decreases.

Answer

As the distance increases, the number of fuel in the tank also increases.

Answer

As the distance decreases, the number of fuel in the tank decreases.

Answer

As the distance decreases, the number of fuel in the tank increases.

Question 12

Which of the following is the graph of the system $$y=\frac{1}{2}x-4$$ and $$y=-\frac{3}{2}x$$ ?

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 13

How can you determine if a system has axactly one solution?

Accepted Answer

The slopes and y-intercepts of the lines are different.

Answer

The slopes of the lines are the same and different y-intercepts.

Answer

The slopes and y-interceots of the lines are the same.

Answer

The slopes of one of the lines is the same with the y-intercept of the other line.

Question 14

How many solutions are there if the graph of the system are overlapping lines?

Accepted Answer

Infinitely many solutions

Answer

no solution

Answer

one solution

Answer

two solutions

Question 15

Which equation represents the line that passes through the points (0,12) and (5,7)?

Accepted Answer

y = -x + 12

Answer

y = 7x - 12

Answer

y = 5x + 12

Answer

y = x - 12

Question 16

Which function in the form y=mx+b for the line with y-intercept of 6 and passes through the point (2,4)?

Accepted Answer

y = -x + 6

Answer

y = x - 6

Answer

y = -2x + 4

Answer

y = x + 6

Question 17

What is the result of the correct first step to solve this system of equations by elimination?

2x + 3y - 4 = 0

4x - 3y + 10 = 0

Accepted Answer

6x = -6

Answer

x = -6

Answer

2x = 14

Answer

x = -1

Question 18

Write an equivalent system where both equations will have the same x-coefficients?

2y - x = -1

3x - y - 5 = 0

Accepted Answer

3x - 6y = 3

and

3x - y = 5

Answer

-3x + 6y = -3

and

3x - y = 5

Answer

x - y = -1

and

3x - y = 5

Answer

3x - 2y = -1

and

3x - y = 5

Question 19

How many solutions does a system have when solving by substitution or elimination results in a false statement, such as -4 = 5?

Accepted Answer

No Solution

Answer

One Solution

Answer

Inifinetly Many Solution

Answer

Two Solution

Question 20

What is the y-intercept of the equation 5x + y - 5 = 0

Accepted Answer

5

Answer

0

Answer

-5

Answer

10

Question 21

Use the two-way frequency table that shows the results of the survey about the students preferred sports.

Do more students like football than baseball?

Accepted Answer

No, because there are 3 more students who likes baseball than football.

Answer

Yes, because there are 3 more students who likes football than baseball.

Answer

No, because there are more students who likes baseball than football.

Answer

No, because most of the students like basketball.

Question 22

How many boys have no siblings?

Accepted Answer

13

Answer

12

Answer

25

Answer

27

Question 23

Which of the following completes the table?

Accepted Answer

1. 13

2. 24

3. 22

4. 27

5. 52

Answer

1. 24

2. 13

3. 27

4. 24

5. 52

Answer

1. 22

2. 20

3. 22

4. 15

5. 27

Answer

1. 12

2. 14

3. 25

4. 27

5. 50

Question 24

How many solutions does the system 12x - 4y = -56 and 3x - y = - 14?

Accepted Answer

Inifnitely Many Solutions

Answer

No Solution

Answer

One Solution

Answer

Two Solutions

Question 25

Two friends are making origami as their hobby. Clara makes 6 origami in 1 hour while Kaye can only make 5 origami in 1 hour, but she starts sooner and has already made 10 origami.

Which of the following equations represents the situation using h for hours and g for number of origami?

Accepted Answer

g = 6h

and

g = 5h + 10

Answer

g = 6h + 10

and

g = 5h - 10

Answer

g = h

and

g = 6h + 5h + 10

Answer

g = 5h

and

g = 6h + 10

Question 26

Two friends are making origami as their hobby. Clara makes 6 origami in 1 hour while Kaye can only make 5 origami in 1 hour, but she starts sooner and has already made 10 origami.

If the system g=6h and g=5h+10 represents the scenario, what is the solution of the system?

Accepted Answer

g = 60

and

h = 10

Answer

g = 10

and

h = 60

Answer

g = 6

and

h = 12

Answer

g = 30

and

h = 2

Question 27

Two friends are making origami as their hobby. Clara makes 6 origami in 1 hour while Kaye can only make 5 origami in 1 hour, but she starts sooner and has already made 10 origami.

Will Clara and Kaye ever be on the same page at the same hour?

Accepted Answer

Yes, on the 10th hour they will both made 60 origami.

Answer

Yes, on the 6th hour they will both made 30 origami.

Answer

Yes, on the 5th hour they will both made 10 origami.

Answer

Yes, on the 60th hour they will both made 10 origami.

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