Unit 4 Graphing

Slope and Y-intercept

100

y=3x+8

m=3

b=8

200

y=8x-7

m=8

b=-7

300

x+y=4

m=-1

b=4

400

2x+3y=6

m=-2/3

b=2

500

3x-5y=10

m=3/5

b=-2

Finding Slope

100

(3,2)   (4,8)

6

200

(2,6)   (-3,16)

-2

300

(3,-8)   (5,  4)

6

400

(4, 7)   (-2,  -3)

5/3

500

(-4,-5)   (13,  6) 

11/17

Equations of a line

100

m=2

b= 8

y=2x+8

200

m=-3

b=2

y=-3x+2

300

m=4

Passes through (3,7) 

y=4x-12

400

m=-3

Passes through (-2,5) 

y=-3x-1

500

Passes through (4,2) and (8,6)

y=x-2

Is it on the line

100

(3,5)  on 2x+y=1

No

200

(3,2) on 2x-y=4

yes

300

(-1,6) on 2y-4=-8x

Yes 

400

(d,2) lies on the line of 2x+3y=-8

-7

500

(3,d) lies on the line of 3x-2y=1

4

Equations

100

x+6=13

7

200

3x+5=20

5

300

-2x-17=3

-10

400

7p-3=4p+21

8

500

4(x+3)-8x=12-(9x-5)

1