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Private Library
Algebra 1 5-2 Direct Variation
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5 (1 rating)
by Matthew Richardson
| 23 Questions
Note from the author:
A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.
The outlined content above was added from outside of Formative.
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1
10 pts
Solve It! The diagram shows how long it takes to hear thunder after you see lightning. What general rule can you use to model this situation? Explain.
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2
10 pts
Problem 1 Got It?
A
B
C
D
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3
10 pts
Problem 2 Got It?
A
B
C
D
4
20 pts
Problem 3 Got it? Weight on the moon y varies directly with weight on Earth x. A person who weighs 100 lb on Earth weighs 16.6 lb on the moon. What is an equation that relates weight on earth x and weight on the moon y? What is the graph of this equation?

Be sure to include relevant graph detail: label axes, indicate units on both axes, and use arrows to represent end behavior, as appropriate.
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5
10 pts
Problem 4 Got It?
A
B
C
D
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6
10 pts
A
B
C
D
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7
10 pts
A
B
C
D
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8
10 pts
A
B
C
D
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9
10 pts
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B
C
D
Vocabulary: Determine whether each statement is always, sometimes, or never true.
10
5 pts
The ordered pair (0, 0) is a solution of the direct variation equation y = kx.
Always
Sometimes
Never
11
5 pts
You can write a direct variation in the form below.

Always
Sometimes
Never
12
5 pts
The constant of variation for a direct variation represented by y = kx is y/x.

Always
Sometimes
Never
13
10 pts
Reasoning: Suppose q varies directly with p. Does this imply that p varies directly with q? Explain.
14
10 pts
Review Lesson 5-1: Find the slope of the line that passes through the pair of points.

2
-2
-1
1
15
10 pts
Review Lesson 5-1: Find the slope of the line that passes through the pair of points.
Enter only a number. If necessary, use fraction form.
16
10 pts
Review Lesson 5-1: Find the slope of the line that passes through the pair of points.
Enter only a number. If necessary, use fraction form.
17
10 pts
Review Lesson 1-2: Evaluate the expression for the given value of the variable.

6a + 3 for a = 2
65
12
9
15
18
10 pts
Review Lesson 1-2: Evaluate the expression for the given value of the variable.

-2x - 5 for x = 3

Enter only a number.
19
10 pts
Review Lesson 1-2: Evaluate the expression for the given value of the variable.

ΒΌx + 2 for x = 16

Enter only a number.
20
10 pts
Review Lesson 1-2: Evaluate the expression for the given value of the variable.

8 - 5n for n = 3

Enter only a number.
21
10 pts
Vocabulary Review: Classify each formula from the image above as representing slope or not representing slope.
• Represents slope
• Does NOT represent slope