slope-intercept form: y=mx+b

Presentation

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Mathematics

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8th Grade

•

Medium

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CCSS

8.EE.B.5, 8.EE.B.6, 8.F.A.3

Standards-aligned

Tifanny Macias

Used 387+ times

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5 Slides • 10 Questions

Slope-intercept form: y=mx+b

by: Ms. Macias

y=mx+b

Slope-intercept form is a format we use to write the equation of a line.

each letter represents something different

m = slope

b= y-intercept

y= all the y-coordinate values on the line

x= all the x-coordinate values

Multiple Choice

What does "b" represent in y=mx+b?

slope

y-intercept

all the y-coordinate values on the line

all the x-coordinate values on the line

Multiple Choice

What does "m" represent in y=mx+b?

slope

y-intercept

all the y-coordinate values on the line

all the x-coordinate values on the line

Identifying m & b in equations (y=mx+b)

y= 4x - 3 ..... m= 4 , b= -3
y = -3x + 7 ..... m= -3 , b= 7
y = x - 8 ..... m= 1 , b= -8
y = -x ..... m= -1 , b= 0
y = 5x + 10 ..... m= 5 , b= 10

Multiple Choice

y = -7x +9

Identify the slope

m= 9

m=-7

m= 7x

m= -7x

Multiple Choice

y = -7x +9

Identify the y-intercept

b= 9

b=-7

b= 7x

b= -7x

Multiple Choice

y = -x -10

Identify the m & b

m= -x , b= -10

m= -x , b= 10

m= -1 , b= -10

m= -1 , b= 10

Slope

a ratio that describes the steepness of a line
4 types of slope - positive, negation, zero, undefined

Multiple Choice

This slope is ...

negative

positive

zero

undefined

Multiple Choice

This slope is ...

negative

positive

zero

undefined

Multiple Choice

This slope is ...

negative

positive

zero

undefined

Finding Slope

Find two points on the graphed line
Find the change y over the change in x (rise over run).

Multiple Choice

The slope of the line is...

-1

- 1/1

Multiple Choice

The slope of the line is...

5/4

-5/4

-4/5

4/5

Slope-intercept form: y=mx+b

by: Ms. Macias

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