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Algebra 1A
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Practice 5.4A
Date________________ Period____
Solve each system by elimination.
1) -7x + y = -7
-10x + 3 y = -21
2) 7x + 2 y = 12
-2x + 12 y = -16
3) 5x + 10 y = 16
10x + 20 y = 20
4) 12x - 8 y = -26
3x - 2 y = -4
Solve each system by substitution.
5) y = 2x + 17
-3x - 4 y = -13
6) y = -3x + 12
-3x - 3 y = -18
7) y = -2x + 8
4x - y = 4
8) y = 7x + 12
3x + 5 y = -16
9) 8x - 3 y = -7
y=x-1
10) 4x - 2 y = 2
y = 2x - 8
Solve each system by graphing.
11) y = -3x - 4
y = 4x + 3
1
12) y = x - 4
2
y = -3x + 3
y
5
-5
-4
-3
-2
y
4
5
3
4
2
3
1
2
-1
1
2
3
4
1
5 x
-1
-5
-4
-3
-2
-1
1
-2
-1
-3
-2
-4
-3
-5
-4
2
3
4
5 x
-5
Worksheet by Kuta Software LLC
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