Systems of Equations & Inequalities Review

Solve by graphing:

3x+y=5

-x-y=1

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Solve by graphing:

-4x-2y=-8

y=2x+4

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Solve by substitution:

2x+5y=-7

7x+y=-8

• (1,1)

• (-9,5)

• (7,2)

• (-1,-1)

Solve by substitution:

x-3y=-24

5x+8y=-5

• (1,1)

• (-9,5)

• (7,2)

• (-1,-1)

Solve by elimination:

x+2y=3

5x+3y=8

• (1,1)

• (-9,5)

• (7,2)

• (-1,-1)

Solve by elimination:

2x=8y-2

3x-3y=15

• (1,1)

• (-9,5)

• (7,2)

• (-1,-1)

Karen and Holly took their families out to the movie theater. Karen bought three boxes of candy and two small bags of popcorn and paid $18.35. Holly bought four boxes of candy and three small bags of popcorn and paid $26.05. Find the cost for a box of candy.

• $4.75

• $2.95

• $3.00

• $5.00

Mr. Delaney broke his piggy bank with a sledge hammer and found that it only contained quarters and pennies. If he had a total of 120 coins for a combined value of $16.32, how many pennies did he have in his piggy bank?

• 63

• 7

• 57

• 65

Graph the inequality:

 $2x-4y<8$  

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Graph the inequality:

 $y\ge-3$  

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