NAME
DATE
3-1
PERIOD
Skills Practice
Graphing Linear Equations
Determine whether each equation is a linear equation. Write yes or no.
If yes, write the equation in standard form.
2. y = 2 - 3x
3. 5x = y - 4
4. y = 2x + 5
5. y = -7 + 6x
6. y = 3x2 + 1
7. y - 4 = 0
8. 5x + 6y = 3x + 2
1
y=1
9. −
Lesson 3-1
1. xy = 6
2
Find the x- and y-intercepts of each linear function.
y
10.
y
11.
y
12.
x
x
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
O
O
Graph each equation by making a table.
13. y = 4
14. y = 3x
y
15. y = x + 4
y
x
O
x
O
y
x
O
x
O
Graph each equation by using the x- and y-intercepts.
16. x - y = 3
17. 10x = -5y
y
O
Chapter 3
18. 4x = 2y + 6
y
x
y
x
O
7
O
x
Glencoe Algebra 1
NAME
3-1
DATE
PERIOD
Practice
Graphing Linear Equations
Determine whether each equation is a linear equation. Write yes or no. If yes,
write the equation in standard form and determine the x- and y-intercepts.
1. 4xy + 2y = 9
2. 8x - 3y = 6 - 4x
4. 5 - 2y = 3x
5. − - − = 1
5
2
6. −
x -−
y =7
1
7. −
x-y=2
8. 5x - 2y = 7
9. 1.5x + 3y = 9
y
y
x
4
3. 7x + y + 3 = y
y
3
Graph each equation.
2
O
x
y
x
O
x
O
a. Find the y-intercept of the graph of the equation.
14
Long Distance
12
Cost ($)
10
8
6
4
2
b. Graph the equation.
0
c. If you talk 140 minutes, what is the monthly cost?
40
80
120
Time (minutes)
160
11. MARINE BIOLOGY Killer whales usually swim at a
rate of 3.2–9.7 kilometers per hour, though they can travel
up to 48.4 kilometers per hour. Suppose a migrating killer
whale is swimming at an average rate of 4.5 kilometers per
hour. The distance d the whale has traveled in t hours can
be predicted by the equation d = 4.5t.
a. Graph the equation.
b. Use the graph to predict the time it takes the killer
whale to travel 30 kilometers.
Chapter 3
8
Glencoe Algebra 1
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
10. COMMUNICATIONS A telephone company charges
$4.95 per month for long distance calls plus $0.05 per
minute. The monthly cost c of long distance calls can be
described by the equation c = 0.05m + 4.95, where m is
the number of minutes.