Pre-Algebra
Unit 5: Graphing Linear Equations
Equations of Direct Variation
Name:
Worksheet 5.11
State the slope of each of the following direct variation equations.
1. y = 4x
2. y = -3x
3. y = ½ x
4. 10x + 5y = 0
Which of the lines graphed below show direct variation?
5. Does line A show direct variation?
A
B
6. Does line B show direct variation?
C
7. Does line C show direct variation?
D
8. Does line D show direct variation?
Write the equation of each of the lines on the following coordinate plane.
9. The equation of line E is:
F
E
G
10. The equation of line F is:
11. The equation of line G is:
Check yourself: 1) slope = 4
5) yes
9) y =
x
14) y =
x
over
Graph the following lines without using tables.
13. 10x + 5y = 0
12. y = x
Tell whether each number is prime or
composite.
14. 253
15. 197
Write the prime factorizations of each
number.
16. 220
Without graphing, write the equations that match the following tables.
14.
x
20
30
50
y
-4
-6
-10
15.
x
-5
0
15
y
-10
0
30
16.
x
2
3
8
y
3
4.5
12
Answer the following questions.
17. What is the domain described by the table in question #14?
18. What is the range described by the table in question #14?
19. What is the equation of the line that goes through the origin and the point (5,6)?
Pg 324 - 333