Writing Equations in
4.6
Slope-Intercept Form
How can you write an equation of a line when
you are given the slope and the y-intercept of the line?
1 1
ACTIVITY:
Writing Equations of Lines
Work with a partner.
Find the slope of each line.
●
Find the y-intercept of each line.
●
Write an equation for each line.
●
What do the three lines have in common?
●
a.
b.
y
y
6
7
5
6
5
3
2
3
1
2
6
5
4
3
1
1
3
4
5
6 x
1
6
5
4
2
1
1
2
4
5
6 x
2
1
3
5
4
6
5
c.
d.
y
y
6
8
5
7
Writing Equations
4
6
In this lesson, you will
5
3
write equations of lines in
●
2
4
slope-intercept form.
1
2
6
5
4
3
1
2
3
4
5
6 x
1
6
5
4
1
1
2
3
4
5
6 x
3
1
4
2
3
5
6
4
178
Chapter 4
Graphing and Writing Linear Equations