Unit 6/7 Test Review

What is the solution of the following system of equations?

y - x = -5 and 2y + 2x = 10

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CCSS.HSA.REI.C.9

The sum of two numbers is 12. Their difference is 6. What are the two numbers?

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CCSS.8.EE.C.8C

What is the y - value of the solution to this system of equations?

4x + 2y = 18 and -6x = 4y + 2

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CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

What is the solution to the system of equations graphed?

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CCSS.8.EE.C.8B

Lia has 15 coins that are dimes and quarters. She has a total of $2.40. How many dimes and quarters does she have?

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CCSS.8.EE.C.8C

What is the value for x for the solution to this sytem of equations?

y = -x + 2 and 7x + 4y = -1

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CCSS.HSA.REI.C.6

CCSS.8.EE.C.8B

Which is a solution to the system?

-5x + 5y = 10 and 3x - 2y = -10

• (4, 6)

• (6, 4)

• (-6, -4)

• (-4, -6)

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CCSS.HSA.REI.C.9

Which system of equations has no solution?

• 6x + 4y = -24 and -2x + 3y = 36

• -4x + 6y = -24 and -2x + 3y = 36

• 6x + 4y = -24 and -5x + 3y = 36

• -4x + 6y = -24 and -5x + 3y = 36

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CCSS.8.EE.C.8B

How many solutions does the following system have?

4x + 2y = 8 and x + y = 4

• no solution

• two

• one

• infinite

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CCSS.8.EE.C.8B

At the first game, Yabi bought 1 hot dog and 2 sodas for $8. At the second game, he bought 3 hot dogs and 1 soda for $9. What was the price for one soda?

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CCSS.8.EE.C.8C