Final Exam Review
Flashcard
•
Mathematics
•
7th Grade
•
Hard
Wayground Content
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16 questions
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1.
FLASHCARD QUESTION
Front
What is the constant of proportionality?
Back
The constant of proportionality is the ratio between two quantities that are directly proportional to each other. It is often represented as 'k' in the equation y = kx.
2.
FLASHCARD QUESTION
Front
How do you write an equation for a proportional relationship?
Back
To write an equation for a proportional relationship, identify the constant of proportionality and use the form y = kx, where k is the constant.
3.
FLASHCARD QUESTION
Front
If Craig earns $37 for 4 hours, what is his hourly rate?
Back
To find the hourly rate, divide the total earnings by the number of hours: $37 / 4 hours = $9.25 per hour.
4.
FLASHCARD QUESTION
Front
What is the formula to calculate the amount in a bank account after interest is applied?
Back
The formula is A = P(1 + r)^t, where A is the amount after t years, P is the principal amount, r is the interest rate, and t is the time in years.
5.
FLASHCARD QUESTION
Front
How do you calculate the percentage increase?
Back
Percentage increase = ((new value - old value) / old value) * 100.
6.
FLASHCARD QUESTION
Front
What is the temperature change if it goes from -13 degrees to 27 degrees?
Back
The temperature change is 27 - (-13) = 27 + 13 = 40 degrees.
7.
FLASHCARD QUESTION
Front
What does it mean for a quantity to be proportional?
Back
A quantity is proportional if it increases or decreases at a constant rate relative to another quantity.
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