What is proportionality?
Proportionality Retest 23-24

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•
Mathematics
•
7th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Proportionality refers to the relationship between two quantities where their ratio remains constant. If one quantity increases, the other increases in a way that maintains the same ratio.
2.
FLASHCARD QUESTION
Front
How do you convert inches to centimeters?
Back
To convert inches to centimeters, multiply the number of inches by 2.5. For example, 27 inches is 27 x 2.5 = 67.5 cm.
3.
FLASHCARD QUESTION
Front
What is percent decrease?
Back
Percent decrease is a measure of how much a quantity has decreased relative to its original value, expressed as a percentage. It is calculated using the formula: ((original value - new value) / original value) x 100.
4.
FLASHCARD QUESTION
Front
How do you calculate the total cost including tax?
Back
To calculate the total cost including tax, first find the subtotal (sum of all items), then multiply the subtotal by the tax rate (as a decimal) and add it to the subtotal.
5.
FLASHCARD QUESTION
Front
What is the formula for finding the weight of multiple items?
Back
To find the weight of multiple items, use the formula: Total Weight = (Weight of one item) x (Number of items).
6.
FLASHCARD QUESTION
Front
What is a linear equation?
Back
A linear equation is an equation that makes a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.
7.
FLASHCARD QUESTION
Front
How do you find the total amount spent on multiple items?
Back
To find the total amount spent on multiple items, multiply the price of each item by the quantity purchased and sum all the amounts.
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