Constant of Proportionality, y=kx

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•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the constant of proportionality in the equation y = kx?
Back
The constant of proportionality (k) is the ratio of y to x, representing how much y changes for a unit change in x.
2.
FLASHCARD QUESTION
Front
If y = 5x, what is the constant of proportionality?
Back
k = 5
3.
FLASHCARD QUESTION
Front
How do you find the unit rate from a proportional relationship?
Back
The unit rate is found by dividing the total amount by the number of units, giving the value of one unit.
4.
FLASHCARD QUESTION
Front
If 3 ice cream bars cost $6.00, what is the cost of one ice cream bar?
Back
$2.00
5.
FLASHCARD QUESTION
Front
What does it mean if a relationship is proportional?
Back
A relationship is proportional if it can be represented by a straight line through the origin on a graph, and the ratio of y to x is constant.
6.
FLASHCARD QUESTION
Front
In the equation y = 18.50x, what does 18.50 represent?
Back
18.50 is the constant of proportionality, indicating the cost per unit.
7.
FLASHCARD QUESTION
Front
If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?
Back
180 miles (60 miles/hour * 3 hours).
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