Systems of Equations

Graphing

100

x − y = 3

7x − y = −3

(-1, -4)

200

4x + y = 2

x - y = 3

(1, -2)

300

y = x + 2

x = -3

(-3, -1)

400

y = -3x + 4

y = 3x - 2

(1, 1)

500

y = 4x - 9

y = x - 3

(2, -1)

Drawing

100

6x + 4y = 80

6x + 5y = 94

(4, 14)

200

3x + 3y = 69

5x + 3y = 91

(11, 12)

300

4x + 5y = 102

7x + 5y = 126

(8, 14)

400

3x + y = 4

-3x + y= -2

(1, 1)

500

4x + y = 2

x - y = 3

(1, -2)

Setting Equal

100

y = x - 11

y = -2x + 19

(10, -1)

200

 y = -x + -1

 y = −5x − 17 

(-4, 3)

300

y = 5x − 7

y = −1.5x + 6

(2, 3)

400

y = 4x + 6 

y = −5x − 21 

(-3, -6)

500

y = x + 1

y = 5x + 13 

(-3, -2)

Elimination 1

100

−4x − 2y = −12

 4x + 8y = −24

(6, -6)

200

−6x + 5y = 1

6x + 4y = −10 

(-1, -1)

300

−6x + 6y = 6

 −6x + 3y = −12

(5, 6)

400

7x + 2y = 24

8x + 2y = 30 

(6, -9)

500

8x + y = −16 

−3x + y = −5 

(-1, -8)

Elimination 2 & 3

100

5x + y = 9

10x − 7y = −18

(1, 4)

200

−4x + 9y = 9

 x − 3y = −6 

(9, 5)

300

−3x + 7y = −16

−9x + 5y = 16 

(-4, -4)

400

−7x + y = −19

−2x + 3y = −19

(2, -5)

500

16x − 10y = 10

−8x − 6y = 6

(0, -1)