CP Algebra II Unit 3 - Systems of Equations

Graphing

100

y=-8/3x+4

y=-2/3x-2

(3, -4)

200

4x+3y=-6

x-3y=-9

(-3, 2)

300

3x+4y=16

3x+4y=8

No solution

400

12=-4y+7x

-6y+3x=-12

(4, 4)

500

-6-2y=x

-x=6+2y

Infinite Number of Solutions

Substitution

100

x+2y=18

8x-4y=-16

(2, 8)

200

x+3y=-17

-3x-2y=-5

(7, -8)

300

4x-8y=4

-5x+4y=-17

(5, 2)

400

-4x-4y=-4

2x+2y=1

No Solution

500

-3x+5y=10

2x-5y=-15

(5, 5)

Elimination

100

-4x-4y=4 

6x+4y=10

(7, -8)

200

-2x-7y=29

-2x+3y=-1

(-4, -3)

300

15x-5y=-5                

9x-3y=-3

Infinite number of solutions

400

6x-10y=18

4x-7y=11

(8,3)

500

-1=-4x+1/2y

-8-4y=8x

(0, -2)

Solve by substitution or elimination

100

-4x+y=23

5x+5y=-10

(-5, 3)

200

-x-6y=-19

-2x-3y=-11

(1,3)

300

12y-7x=4

6y=24+9x

(-4, -2)

400

5x=3y+4

3x-6y=15

(-1, -3)

500

4/9y=-3+5/9x

7x=9+2y

(-1, -8)