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Mathematics
9th
grade
Solving Systems of Linear Equations by Elimination
15 questions
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- 1. Multiple ChoiceSolve by elimination:
4x+9y=28
-4x-y=-28(-7,0)(6,0)(-6,0)(7,0) - 2. Multiple Choice
Solve by elimination:
3x+7y=23
-3x-7y=-17
No solution
(0, 3)
(-3,3)
(3,3)
- 3. Multiple Choice
Solve by elimination:
7x+y=-9
-3x-y=5
No solution
(-1,8)
(-2,-3)
(-1,-2)
- 4. Multiple ChoiceSolve by elimination:
4x+4y=4
3x+4y=10(7,-6)(-6,7)(6,7)(7,6) - 5. Multiple ChoiceSolve by elimination:
-x+2y=17
2x+2y=-10ARN(-9,4)(-9,-4)(9,-4) - 6. Multiple Choice
Solve by elimination
4x-6y= -6
-2x-12y= -12
(0,1)
(1,0)
(1,1)
(0, 2)
- 7. Multiple ChoiceSolve by elimination
2x+9y= -7
6x-3y= 9(-1, -1)(2,-1)(1,1)(1,-1) - 8. Multiple Choice
Solve the system using elimination.
2x + 3y = 12
5x - y = 13
(-3, -2)
(1.5, 2)
(3, 0)
(3, 2)
- 9. Multiple ChoiceAlex and Billy are running laps. According to the graph, how long will it take for the two boys to run the same distance?20 minutes15 minutes10 minutes5 minutes
- 10. Multiple ChoiceLast season two running backs on the Steelers football team rushed a combined total of 1550 yards. One rushed 4 times as many yards as the other. Let x and y represent the number of yards each individual player rushed. Which system of equations could be used?x + y = 1550
y = 4xx + y = 1550
y = x + 4y - x = 1550
y = 4xy = 1550 + x
y = x + 4 - 11. Multiple Choice
What is the best first step to solve this system by elimination?
Add the equations to eliminate y
Subtract the equations to eliminate y
Multiply the second equation by 3.
Multiply the first equation by 2
- 12. Multiple Choice
The solution to a system of linear equations is ALWAYS...
a fraction
an ordered pair
a decimal
a negative number
- 13. Multiple Choice
You and your friend are buying throw blankets with your names embroidered on them. The cost of the throw blanket is x dollars and the cost of each embroidered letter is y dollars. Your name has 6 letters and the total cost is $29. Your friend's name has 3 letters and the total cost is $24.50. Which system can you use to solve this problem?
- 14. Multiple Choice
Solve this system of equation
-8x + y = 1
-6x + y = 3
(1, 9)
(4, 14)
(0, 1)
(2, 4)
- 15. Multiple Choice
Solve this system of equation
5x - 2y = 9
2x + 7y = -12
(1, -1)
(-1, 1)
(-1, 2)
(1, -2)
- Answer choicesTagsAnswer choicesTags