Slope Intercept Form

Presentation

•

Mathematics

•

8th Grade

•

Practice Problem

•

Medium

•

CCSS

8.EE.B.5, 8.EE.B.6, 8.F.B.4

Standards-aligned

Kristan Rushe

Used 5+ times

FREE Resource

9 Slides • 34 Questions

Slope and Y-intercept

Let's start over...

Please get out a piece of paper and your computer. I will tell you what slides need to be copied.

You do not need a calculator.

What do you notice?
Do we start at 0?
Are wait times increasing or decreasing?

What is this graph showing?

What do you notice?
Do we start at 0?
Are wait times increasing or decreasing?

What is this graph showing?

What do you notice?
Do we start at 0?
Are wait times increasing or decreasing?
How much is he adding per month?

What is this graph showing?

Slope-intercept Form

y = mx + b
m represents the slope, rate of change, rise/run
b represents the y-intercept, place the graph touches the y-axis
Example: y=3x+4
m(slope)=3
b(y-intercept)=4

Multiple Choice

What is the slope of y=4x-6

-6

-4

Multiple Choice

What is the y-intercept of y=1/2x+4

1/2

-4

Multiple Choice

What is the correct m and b of the equation:

$y=-\frac{7}{2}x-3$

m= $\frac{7}{2}$ b=3

m= $-\frac{7}{2}$ b=3

m= $-\frac{7}{2}$ b=-3

m= -3 b= $-\frac{7}{2}$

Poll

How are we feeling?

Got it!

Still Lost!

Open Ended

What is a strategy you can use to find the slope of a graph?

Type response here

Slope of a Graph using Rise over Run

You can find the slope of a graph using rise/run

Slope of a Graph using Rise over Run

You can find the slope of a graph using rise/run

Multiple Choice

What is the slope of this line?

m=rise/run

m = 1/2

m = 2/1

m = -2/1

m = -1

Multiple Choice

Find the slope of the line.

-2

-1

Multiple Choice

Find the slope

5/2

-5/2

2/5

-2/5

Multiple Choice

Find the slope

-5/3

-3/5

5/3

3/5

Multiple Choice

Find the slope of the line.

1/2

-1/2

-2

Multiple Choice

What type of slope does this graph show?

Positive

Negative

Zero

Undefined

Y-Intercept of a Graph

The y-intercept is the point where the line crosses the y-axis

Multiple Choice

What is the y-intercept of this graph?

b = -2

b = 2

b = 1

b = -1

Multiple Choice

What is the y-intercept of the line?

(0, 4)

(0, -4)

(0, 5)

(0, -5)

Multiple Choice

What is the y-intercept of the line?

(0, -4.5)

(0, 4.5)

(0, 5)

(0, -5)

Multiple Choice

What is the y-intercept of the line?

(0, 2)

(0, -2)

(0, 1)

(0, -1)

Multiple Choice

What is the y-intercept of the graph shown?

-2

-4

Multiple Choice

What is the y-intercept of the graph shown?

-3

$\frac{1}{2}$

Multiple Choice

What is the slope of the line with the equation y = 2/3x - 6 ?

2/3

- 2/3

3/2

-3/2

Multiple Choice

What is the slope of the line with the equation y = 4x + 12

1/4

-4

-1/4

Multiple Choice

Which of these represents slope-intercept form?

y - y₁ = m(x-x₁)

Ax + By = C

y = mx + b

Multiple Choice

Determine the slope and y-intercept from the following equation: y = 3/2x + 3

slope: 5 y-intercept: (0,3)

slope: 3/2 y-intercept: (0,3)

slope: 4 y-intercept: (0,3/2)

slope: 1/5 y-intercept: (0,5)

Multiple Choice

If m=3 and b=6, what is the correct slope intercept equation?

y=3-6

y=3x-6

y=3x+6

y=6x+3

Multiple Choice

How would you write the equation with a slope of 2/3 and a y-intercept of -3

y=3/2x+3

y=2/3-3

y=2/3x-3

y=2/3x+3

Multiple Choice

What is the y-intercept in the following equation: y=-4x-5

-4

-4x

-5

Multiple Choice

What is the slope in the equation: y=4x+3

Multiple Choice

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

y-intercept

slope

macaroni

nothing

Multiple Choice

What is the equation of a line when m = -7 and b = -8?

y = -7x + 8

y = -7x - 8

y = 7x - 8

y = 7x + 8

Multiple Choice

Which equation matches the graph?

y= 0.5x - 5

y= -0.5x - 5

y= 0.5x + 5

y= -0.5x + 5

Multiple Choice

Which equation matches the graph?

y= 3x - 5

y= -3x - 5

y= 3x + 5

Multiple Choice

Which equation matches the graph?

y= 3x - 5

y= -3x - 5

y= 3x + 5

Multiple Choice

Which equation matches the graph?

y= 1x + 3

y= 1x

y= -1x + 3

y= -1x

Multiple Choice

Which equation matches the graph?

y= 1x + 3

y= 1x

y= -1x + 3

y= -1x

Multiple Choice

Which equation matches the graph?

y= 2x + 5

y= 2x

y= -2x + 5

y= -2x

Multiple Choice

Which equation matches the graph?

y= 2x + 5

y= 2x

y= -2x + 5

y= -2x

Slope and Y-intercept

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