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8th: Proportions, Scatterplots, and Review Flashcards | StudBud
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8th: Proportions, Scatterplots, and Review
8th: Proportions, Scatterplots, and Review
20 terms
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Flashcards
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Questions
20
Answers
1
y varies directly with x. If y = 30, then x = -6. Find y when x = 4.
-20
20
-0.8
0.8
2
What is the correlation?
positive
negative
none
3
What is the best prediction of math SAT scores if Verbal is 570?
620
600
540
570
4
Is this linear?
No
Yes
5
What is the y intercept?
100
900
0
1
6
y varies directly with x. If y = 20, then x = 4. Find x when y = 15.
4
75
3
5
7
Is this proportional?
Yes
No
8
What is the best prediction for the weight when the height is 55 inches?
100
50
90
70
9
Is this linear?
Yes
No
10
Is this proportional?
Yes
No
11
Is this proportional?
No
Yes
12
y varies directly with x. If y = 4, then x = 18. Find y when x = 9.
4
3
7
2
13
Is this proportional?
No
Yes
14
What is the best prediction for the weight when the height is 75 inches?
120
140
70
100
15
Is this proportional?
Yes
No
16
y varies directly with x. If y = -12, then x = 6. Find y when x = -5.
20
10
-10
-20
17
What is its y intercept?
5
1
0
-1
18
Is this linear?
Yes
No
19
What is the correlation?
Positive
Negative
No
20
What is the correlation?
negative
positive
none
