Systems Elimination 1 and 2

Just Adding

100

10x-3y=18

-2x+3y=6

(3,4)

200

x-y=10

3x+y=18

(7,-3)

300

-2x+4y=-8

5x-4y=20

(4,0)

400

2x+y=-10

-2x-y=10

infinite solutions

500

-3x+3y=6

3x+8y=16

(0,2)

Multiply a Negative

100

x+4y=13

x-y=3

(5,2)

200

4x+2y=6

-2x+2y=18

(-2,7)

300

DAILY DOUBLE

y=3x+4

y=x-2

(-3,-5)

400

3x-10y=14

3x-9y=15

(8,1)

500

x-3y=11

2x-3y=16

(5,-2)

Multiply 1 Equation

100

x+3y=6

2x-7y=-1

(3,1)

200

7x-2y=37

4x+y=19

(5,-1)

300

2x+5y=14

4x+2y=-4

(-3,4)

400

x-3y=7

2x-6y=12

no solution

500

2x+y=-2

5x+3y=-8

(2,-6)

Multiply BOTH Equations

100

2x+4y=6

3x+6y=12

no solution

200

5x+9y=-10

7x+10y=-1

(7,-5)

300

3x+3y=9

5x+4y=10

(-2,5)

400

DAILY DOUBLE

7x+5y=-13

-2x-7y=26

(1,-4)

500

-2x+2y=-16

-3x+6y=-21

(9,1)

You Figure It Out!

100

9x-5y=12

2x+y=-10

(-2,-6)

200

DAILY DOUBLE

3x-5y=-3

4x-9y=3

(-6,-3)

300

-3x-4y=-1

3x-y=-4

(-1,1)

400

5x+2y=-3

3x+3y=9

(-3,6)

500

DAILY DOUBLE

-x+9y=27

-x+2y=-1

(9,4)