9th Exam Review

Slope of Parallel Lines

100

y=3/2x+7

3/2

200

y=-5x-6

-5

300

2y=6x-10

3

400

4y=15x-4

15/4

500

16x=4y+4

4

2 step equations

100

6x+8=14

x=1

200

8x-12=4

x=2

300

33x-198=165

x=11

400

11x+22=143

x=11

500

25x-250=525

x=31

Arithmetic or Geometric

100

4,9,14,19,24,29

Arithmetic

+5

200

5,20,80,320,1280,5120

Geometric

Times 4

300

8,16,32,64,128,256

Geometric

Times 2

400

1.5,6,24,96,384,1536

Geometric

Times 4

500

2,5.5,9,12.5,16,19.5

Arithmetic

+3.5

Slope of perpindicular lines

100

y=-4/5x-6

5/4

200

y=5x-7

-1/5

300

5x-7y=12

-7/5

400

2y+2=8x

-1/4

500

7y+12=-14x

1/2

What is the ratio or difference?

100

4,7,10,13,16,19,22

+3

200

3,9,27,81,243,729,2187

Times 3

300

25,18,11,4,-3,-10,

Minus 7

400

4,-8,16,-32,64,-128

Times -2

500

42,38,34,30,26,22

Minus 4