Systems of Equations

Substitution

100

Solve using substitution
 2x-y+3
 5x+3y=17

(2,1)

200

 Solve using substitution

 -3x+3y=4

-x+y=3

No solution

300

Solve using substitution
 -2x+6y=6
-7x+8y=-5

(3,2)

Elimination

100

Solve using elimination
4x+7y=20
-4x+2y=-30

(7,-1)

200

Solve using elimination
 -6x+5y=1
6x+4y=-10

(-1,-1)

300

Solve using elimination
 4x+3y=10
4x+2y=4

(-2,6)

Elimination

100

Solve using elimination
-3x+7y=-16
-9x+5y=16

(-4,-4)

200

Solve using elimination
5x+y=9
10x-7y=-18

(1,4)

300

Solve using elimination
 -2x-4y=16
-4x+6y=18

(-6,-1)

Solve using any method

100

Determine best method and solve

2x+6y=-8
x-3y=8

Substitution

(2,-2)

200

Determine the best method and solve

3x+4y=30

3x+3y=28

Elimination with subtraction

(-6,7)

300

Determine the best method and solve

y=2x+5
y=3x+7

Graphing (substitution could also work but graphing is easier)

(-2,1)