y=mx+b (Don't be scared of fraction answers!)

x+y=

100

3x+y=12

y=-3x+12

200

2x+y=41

y=-2x+41

300

x+y=4

y=-x+4

400

5x+2y=9

y=-5/2x+9/2

500

x+4y=-31

y=-1/4x-31/4

Properties Review

100

a + b = b + a

Commutative Property of Addition

200

5 * 1 = 5

Multiplicative identity

300

3 (4 + 7) = 3 * 4 + 3 * 7

Distributive Property

400

(1 + 4) + 6 = 1 + (4 + 6)

Associative Property

500

5 * 1/5 = 1

Multiplicative Inverse

x-y=

100

3x-5y=12

y=3/5x-12/5

200

x-3y=17

y=1/3x-17/3

300

8x-3y=17

y=8/3x-17/3

400

10x-5y=15

y=2x-3

500

7x-4y=16

y=7/4x-4

-x-y=

100

-1x-5y=10

y=-1/5x-2

200

-7x-3y=-9

y=-7/3x+3

300

-2x-6y=18

y=-1/3x-3

400

-8x-4y=-20

y=-2x+5

500

-5x-10y=100

y=-1/2x-10

Misc.

100

x + 3y =-3

y = -1/3x-1

200

5x - y = 3

y=5x-3

300

2x - 4y = 20

y = 1/2 x - 5

400

10x - 8y = 24

y=5/4x-3

500

9x - 12y = 12

y=3/4x-1