 8th grade Math - Equations Review
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Practice 20 QuestionsShow answers
• Question 1
900 seconds Q. What is the equation of this line?
0
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y = -2
x = -2
• Question 2
900 seconds Q. Give the equation for the graph
y = 5x - 3
y = 4x + 2
y =-2x + 5
y = - 2x + 4
• Question 3
300 seconds
Q. Solve:
3x + 7 = -8
5
-5
-12
-18
• Question 4
300 seconds
Q. Solve:
7x - 3x - 8 = 24
8
-8
3.2
4
• Question 5
300 seconds
Q. Solve:
3(x - 2) = 18
6.7
4
8
-4
• Question 6
300 seconds
Q. Solve:
7x + 19 = -2x + 55
4
14.8
8.2
-4
• Question 7
900 seconds Q. The graph represents the height of a burning candle.  What is the meaning of the y-intercept?
the time it takes to burn the entire candle
the rate at which the candle is losing height
the change in the height of the candle each hour
the original height of the candle
• Question 8
900 seconds
Q. Charlie rented a moving truck. He paid a daily fee plus a per-mile fee to rent the truck. The equation below represents the daily amount Charlie paid for the truck if he drives it x miles.
y=0.5x+10
What does the slope of the graph of this equation represent?
The daily fee for the moving truck
The per-mile fee for the moving truck
How much Charlie paid for the truck
The number of miles he drove
• Question 9
900 seconds Q. Given the table, write the equation in the slope-intercept form.
y = 1/3x + 6
y = 3x + 6
y = 2x + 6
y = 1/2x + 6
• Question 10
300 seconds Q. What is the equation of this line?
x=-2
y=-2x
x=2
y=-2
• Question 11
300 seconds Q. The graph represents the money in a savings account.  What is the meaning of the y-intercept?
The initial deposit was \$30
\$30 is added to the account each week
It took 30 weeks to same enough money to open an account
not enough information
• Question 12
120 seconds Q. Where do these two lines meet?
(2, -9)
(-9, 2)
No solultion
(2, 9)
• Question 13
120 seconds Q. What is the solution?
(6, 3)
(3, 6)
(-6, 3)
No solution
• Question 14
120 seconds Q. What is the solution?
(6, 3)
(3, 6)
(-6, 3)
No solution
• Question 15
120 seconds Q. The solution to this system is:
No solution
(0, 1)
(0, -2)
(4, 3)
• Question 16
180 seconds Q. Which is the graph of y= -x + 2?
A
B
C
D
• Question 17
120 seconds
Q. If a system of linear equations has one solution, what does this mean about the two lines?
Parallel lines
Identical lines
Intersecting lines
• Question 18
120 seconds
Q. If a system of linear equations has infinitely many solutions, what does this mean about the two lines?
Intersecting lines
Identical lines
Parallel lines
• Question 19
30 seconds
Q. What is the slope of the line 3x-9y=12?
3
9
1/3
-3
• Question 20
900 seconds
Q. Solve the system of equations.
y = 4x+1
3x + 2y = 13