
Fall Semester Exam Review
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is direct proportionality?
Back
Direct proportionality means that as one quantity increases, another quantity increases at a constant rate. For example, if you earn $70 for 5 hours of work, your earnings are directly proportional to the hours worked.
2.
FLASHCARD QUESTION
Front
If $70 is earned in 5 hours, how much is earned in 22 hours?
Back
$308
3.
FLASHCARD QUESTION
Front
What is a linear function?
Back
A linear function is a function that graphs to a straight line. It can be expressed in the form f(x) = mx + b, where m is the slope and b is the y-intercept.
4.
FLASHCARD QUESTION
Front
Write the linear function for the cost of making greeting cards if it costs $0.75 per card and $4.50 for materials.
Back
f(x) = 0.75x + 4.50
5.
FLASHCARD QUESTION
Front
What is an arithmetic sequence?
Back
An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant. For example, {14, 22, 30, 38} is an arithmetic sequence with a common difference of 8.
6.
FLASHCARD QUESTION
Front
What does the domain of a function represent?
Back
The domain of a function represents all the possible input values (x-values) for which the function is defined.
7.
FLASHCARD QUESTION
Front
In the context of a gift card, what does the domain represent if it shows the number of purchases made?
Back
The domain represents the number of White Chocolate Mochas purchased.
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