Linear Equations

y=mx+b

100

y-2=3x

y=3x+2

200

x+y=0

y=-x

300

y-1/2x=-3

y=1/2x-3

400

y+3.5x=7

y=-3.5x+7

500

3y+x=10

y=-1/3x+10

increase, decrease, undefined, 0

100

3/2x

positve

200

-1/3x

decreasing

300

y=-3x

negative

400

x=2

Undefined

500

y=-3

0

plug in 0 for x & y

100

2x-4y=8

(4,0), (0-4)

200

x+2y=-4

(-4,0), (0-2)

300

2x-4y=8

(4,0), (0,-2)

400

-3y=-12-6x

(-2,0), (0,4)

500

5x=2y+10

(2,0), (0,-5)

Rise/Run

100

Point 1- (1,7)

Point 2- (5,9)

Slope = 1/2

200

Point 1- (5,3)

Point 2- (2,8)

Slope=5/-3

300

Point 1- (-5,8)

Point 2- (-3,8)

Slope= 0

400

Point 1- (-4,2)

Point 2- (-3,9)

Slope= 7/1

500

Point 1- (10,2)

Point 2- (10,5)

Slope=3/0

Identify

100

Identify the slope- y=3/5x+2

3/5x

200

Identify the y-intercept y=-3/5x+1

1

300

Identify the Slope and y-intercept

y=-3/4x+6

Slope= -3/4

y-intercept= 6

400

Identify the y-intercept- y-7=x

7

500

Identify the slope- y-2x=-3

2/1