What is the length of x if the scale factor is 1/2?
3 1/4 or 3.25
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15
Does the table represent a proportional relationship? If yes, what is the constant of proportionality?
1/3
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baam
Lose 10 points!
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gift
Win 25 points!
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rocket
Go to first place!
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baam
Lose 15 points!
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25
A store bought a black jacket and marked it up by 2/3 of the original price. Then, it sold it for $250. How much was the jacket's original cost before the mark up?
$150
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10
Is this the graph of a proportional relationship?
Yes.
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baam
Lose 25 points!
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seesaw
Swap points!
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fairy
Take points!
5
10
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25
banana
Go to last place!
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10
What is the equation of a proportional relationship?
y = kx
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20
A pair of earrings cost $75. It is on sale for 1/3 off the original price. What is the discount?
$25
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20
A pair of pants cost $60.80 and was on sale for 1/4 off the original price. What is the sales price?
$45.60
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20
What is the scale factor from picture B to picture A?
1/4 or 0.25
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15
One pound of bananas cost $0.59. How much will 25 pounds cost?
$14.75
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15
Does the table represent a proportional relationship? If yes, what is the constant of proportionality?
No.
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heart
Other team wins 20 points!
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rocket
Go to first place!
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shark
Other team loses 5 points!
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thief
Give points!
5
10
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25
15
What formula can we use to find the constant of proportionality (K)?
k = y/x
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20
What is the scale factor from picture A to picture B?