Writing Equations In Slope-Intercept Form Worksheet - Chapter 4 Page 2

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2 2
ACTIVITY:
Describing a Parallelogram
Work with a partner.
Math
Practice
Find the area of each parallelogram.
Analyze Givens
Write an equation that represents each side of each parallelogram.
What do you need
to know to write
a.
b.
y
y
an equation?
6
6
5
4
3
3
2
2
1
7
6
4
3
2
1
2
3
4
5 x
6
5
4
3
2
1
1
2
3
4
5
6 x
1
1
2
3
3
4
4
3 3
ACTIVITY:
Interpreting the Slope and the y-Intercept
Work with a partner. The graph
k i h
h
h
Car Trip
shows a trip taken by a car, where
y
t is the time (in hours) and y is the
distance (in miles) from Phoenix.
500
a. Find the y-intercept of the graph.
400
What does it represent?
b. Find the slope of the graph.
300
What does it represent?
200
c. How long did the trip last?
100
d. How far from Phoenix was the
car at the end of the trip?
0
0
2
4
6
8
10
12 t
e. Write an equation that
Time (hours)
represents the graph.
IN YOUR OWN WORDS
How can you write an equation of a line when you
4.
are given the slope and the y-intercept of the line? Give an example that is
different from those in Activities 1, 2, and 3.
5. Two sides of a parallelogram are represented by the equations y = 2x + 1
and y = − x + 3. Give two equations that can represent the other two sides.
Use what you learned about writing equations in slope-intercept
form to complete Exercises 3 and 4 on page 182.
Section 4.6
Writing Equations in Slope-Intercept Form
179

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