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Activities 9

9.1

Solve the equations by graphing:

a)
I 3x 5y = 30 II x 5y = 10
b)
I x 4y = 8 II 2x + y = 7
c)
I 2x y = 7 II 2x + y = 1
d)
I 2x + y = 4 IIx + y = 4

9.2)

Solve the equations with the substitution method:

a)
I 2x 5y = 30 II 2x + y = 6
b)
I x y = 4 II 6x + y = 38
c)
I3x 2y = 18 IIx + y = 16
d)
I2x y = 3 II3x + y = 18

9.3)

Solve the equations with the elimination method:

a)
I x 3y = 23 IIx + y = 3
b)
I x + y = 1 II 3x + y = 7
c)
I 2x + y = 6 II x 3y = 17
d)
I x + y = 4 IIx + 9y = 46

You can find the solutions here.

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Systems of Equations (Elimination)
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