Slope Intercept Form

Find Slope with 2 points

100

(1,2) and (2,5)

3

200

(6,2) and (4,-1)

3/2

300

(4,-4) (7,-2)

2/3

400

(5,-4) and (-6,-4)

0

500

(3,16) and (3,-5)

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What's the slope?

100

y = 2/3x + 7

2/3 positive

200

y = -2/3x - 10

slope: -2/3 type: negative

300

y = 6x + 9

slope: 6 slope type: positive

400

y = x + 2

slope = 1 slope type: positive

500

y = 2

slope: 0 slope type: 0 slope

What's the y-intercept?

100

y = 2/3x + 5

+ 5

200

y = 8x + 3

+ 3

300

y = 4 + 2x

+ 4

400

y = 2x

slope intercept = 0

500

y = 2x - 9

-9

Linear Equations

100

Write In Slope Intercept form M=8 Y=2

y=8x+2

200

Write in Slope Intercept form M=-3 y=-6

y=-3x-6

300

Identify the slope and y intercept y= 8-4x

slope= -4 

y intercept = 8

400

Identify Slope and Y intercept y=- 20-3/4x

slope= -3/4

y intercept = -20

500

Identify the slope and y intercept y=-15x+15

Slope= -15

y intercept = 15

Parallel and Perpendicular

100

Parallel lines have the ____ slope

same

200

Perpendicular lines have the _____ slope

Irrational

300

Find the slope of the line parallel to y = 12x - 16

12

400

Find the slope of the line perpendicular to the line 

y = -3x + 5

1/3

500

Find the slope of the parallel and perpendicular lines to 3y = 12x - 4

m = 4 parallel

m = -1/4 perpendicular