Chapter 4 Vocabulary -Not finished

Question 1

Slope-Intercept Form

Answer 1

y=mx+b

m=slope : b=y-intercept

Example: y=5x+8

Question 2

What are the steps to…

Solve for B

Slope-Intercept Form

Answer 2

1. Put in y, x, and m (slope)
2. Find the variable (b)
3. Put m and b into y=mx+b

Question 3

Point-Slope Form

Answer 3

y-y1=m(x-x1)

m=slope : y1=y in coordinate pair : x1=x in coordinate pair

Example: y-5=7(x-3)

Question 4

What are the steps to…

Go From Point-Slope to Slope-Intercept

Answer 4

1. Distribute
2. Isolate y

y+7=2(x-6) : y+7=2x-12 : y=2x-19

Question 5

What are the steps to…

Go From Slope-Intercept to Standard Form

Answer 5

1. Move x

y=2x-19 : y-2x=-19 or -2x+y=-19

Question 6

What are the steps to…

Go from Standard-Form to Slope-Intercept

Answer 6

1. Move x
2. Isolate y

4x+6y=12 : 6y=-4x+12 : y=(-2/3)x+2

Question 7

Standard Form

Answer 7

Ax+By=C

Example: 6x+8y=90

Question 8

How do the slopes of parallel lines compare?

Answer 8

Parallel lines have the same slope

Example: 3/4 and 3/4

Question 9

How do the slopes of perpendicular lines compare?

Answer 9

They have opposite, reciprocal slopes

example: 3/4 and -4/3

Exception: Vertical and horrizontal lines have 0 and undefined as the slope