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Equal Values
Elimination
Substitution
100

y=-2x+22

y=3x-28

(10,2)

100

4x − 2y = −12

4x + 8y = −24

(6,-6)

100

−3x − 3y = 3

y = −5x − 17

(−4, 3)

200

y = x + 2

y = 4x + 23

(−7, −5)

200

−4x + 9y = 9

x − 3y = −6

(9,5)

200

−5x + y = −2

−3x + 6y = −12

(0, −2)

300

y = 5x + 20

y = x + 4

(−4, 0)

300

2x + 8y = 6

−5x − 20y = −15

Infinite number of solutions

300

6x + 6y = −6

5x + y = −13

(−3, 2)

400

y = x − 5

y = 5x − 13

(2, −3)

400

16x − 10y = 10

−8x − 6y = 6

(0, −1)

400

−3x + 3y = 4

−x + y = 3

No solution

500

y = 3

y = −2x − 13

(−8, 3)

500

−14 = −20y − 7x

10y + 4 = 2x

(2, 0)

500

−2x − y = −9

5x − 2y = 18

(4, 1)