8th Unit 2 Lesson 11 : Writing Equations for Lines

Label the horizontal and vertical lengths. Then find the slope.

c

d

f

3

2

4

2/1 = 2

1

1/2

Tags

CCSS.8.EE.B.5

Label the vertical, horizontal, and slope.

b

e

d

2/3

2

3/2

1

3

4

Tags

CCSS.8.EE.B.5

What is a point (x,y) with whole number coordinates on the line:

• (0,1)

• (3,2)

• (6,3)

• (3,6)

Tags

CCSS.HSF.IF.A.1

Any slope triangle used to find the slope of a given line will

• vary.

• be equivalent.

• be an isosceles triangle.

Tags

CCSS.8.EE.B.6

What information do you need to write a slope equation?

Groups:

(a) Needed Information

,

(b) Don't Need

• The Sum

• Radius

• Slope

• One Point on the Line

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

CCSS.8.SP.A.2

First, label the horizontal length, vertical distance, and write the (x,y) point on the line that the star shows.

a

b

c

d

2

6

5

3

Tags

CCSS.8.EE.B.5

Now, use that information to fill in the slope equation.

a

b

c

d

5

6

2

3

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.B.4

Find the vertical length, horizontal length, and the (x,y) coordinates of the star point.

c

d

a

f

1

4

3

0

5

2

Tags

CCSS.8.EE.B.5

Now, fill in the slope equation.

a

c

b

d

0

1

2

4

Tags

CCSS.8.EE.B.5

Label the horizontal length, vertical length, and (x,y) point on the line.

a

b

c

d

6

3

1

2

Tags

CCSS.8.EE.B.5