Math Game

Substitution

100

-x+2y=6; 3x-2y=2

(2,2)

200

4x+y=7; 2x+5y=-1

(2,-1)

300

3x+2y=-2; 6x-y=6

(2/3,-2)

400

2x+4y=-4; x-2y=10

(4,-3)

500

4x+y=-1; 8x+2y=-2

Infinite solutions

Elimination

100

-3x+3y=3; 3x+y=9

(2,3)

200

-5x+12y=20; x-2y=-6

(-16, -5)

300

3x+2y=1; 4x+6y=7

(-4/5,17/10)

400

5x+7y=-2; 2x-7y=9

(1,-1)

500

4x+6y=8; 2x+3y=3

No solution

Graphing

100

y=-2x-3
y=-1
Find X

x=-1

200

y=x-4
y=-7x+4

x=1
y=-3

300

y=-x+2
y=-6x-3

x=-1
y=3

400

y=-2/3x-3
y=x+2

x=-3
y=-1

500

y=2x+4
2y-4x=8

Infinate Solutions

Any Method

100

5x+7y=-2; 2x-7y=9

(10,10)

200

4x+6y=8; 2x+3y=3

(17/7, 9/7)

300

3x-8y=0; -2x+5y=-2

(16,6)

400

2x-5y=3; -4x+10y=-6

Infinite solutions

500

5/4x+y=-9/2; x+3/2y=-12

(6,-12)