Math Review

Writing Equations

100

Through (1,0), perp. y=-1/2x+5

y=2x-2

200

Through (5,4), perp. y=-5/9x+1

y=9/5x-5

300

Through (-5, 2), par. y=2 

y=2

400

Through (2,3) par. y=x-3

y=1x-5

500

Through: 93,2) par. y=1/3x-1

y=1/3x+1

Using the Skeleton Method

100

m=-4 through (1,-5)

y=-4x-1

200

m=-4 through (1,-5)

y=-4x-1

300

Through (-4,4) and (-2,3)

y=-1/2x+2

400

Through (1,-5) and (-4,0)

y=-1x-4

500

Through (0-(-1) and (-2, 4)

y=5/-2x-1

Slope

100

(4,-1) (13,4)

2/3

200

(6,3) (13, -2) 

5/7

300

(10, 0) (10, 16) 

Unfdefined

400

0/3

zero slope

500

(-10,-9) (5,-9)

zero slope

Find slope from Standard Form

100

2x+4y=8

1/2

200

3x+y=5

-3/1

300

2x+5y=10

2/5

400

x-3y=6

3/6

500

8x-4y=24

6/3

Simplify using Function Notation

100

Evaluate: f(x)=2x-5 

f(3)

1

200

Evaluate: f(x)=2x-5 

f(x)=-9

x=-2

300

f(x)=1+4x for f(6)

25

400

f(x)=x/4+8 for f(x)=10 

x=8

500

f(x)=8+x/3 for f(x)=5 

x=7