Systems - Substitution & Graphing

Graphing #1

100

y=3x-2 

y=-3x+4

(1,1)

200

y=3x+4 

y=-3x-2

(-1,1)

300

y =4 - x 

y=-3 + 6x

(1,3)

400

y = -2x +2

y = -2x - 8

No Solution

500

y = 3x - 4

y = -1/2x + 3

(2, 2)

Graphing #2

100

y=7/2x-3 

y=1/2x+3

(2,4)

200

y=1/3x+2 

y=-1/3x+4

(3,3)

300

y=3 - x

y=-5x -1 

(-1,4)

400

y = 1/3x - 3

y = -x - 1

(3, -2)

500

y=-2x + 2

y=-3 -1/3x

(3,-4)

Substitution #1

100

y=6x 

y=x-5

(-1,-6)

200

y=7x+17 

y=-3x-3

(-2,3)

300

y=0 

-x+2y=-7

(7,0)

400

y=8x+4 

3x-2y=5

(-1,-4)

500

x = 1

6x-4y=22

(1,-4)

Substitution #2

100

y=-2x 

y=x-3

(1,-2)

200

y=-8 

-2x+4y=-22

(-5,-8)

300

y=3x+22 

-5x-7y=-24

(-5,7)

400

y=6 - 3x

-3x-8y=-6

(2,0)

500

4x-6y=20 

x=-2 -2y

(2,-2)

Combination! :)

100

SUBSTITUTE

y=1/2x+2 

y=5/2x-2

(2,3)

200

GRAPH

y=7x-4 

y=7x-2

No solution

300

SUBSTITUTE

x = 7

-3x+y=-19

(7,2)

400

GRAPH

y=-2x+8

y=2x+4

(1,6)

500

GRAPH

y=-2x-20 

y=2x+8

(-7,-6)