7th Grade Math 7.4(A)
Quiz
•
Mathematics
•
7th Grade
•
Practice Problem
•
Hard
+3
Standards-aligned
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8 questions
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1.
GRAPHING QUESTION
3 mins • 1 pt
A dog eats 1.25 cups of dog food twice a day. Create a graph that best represents this relationship of x, the number of days and y, the number of cups of dog food.
Answer explanation
Since the the dog eats 1.25 cups of dog food twice a day the constant of proportionality would be 2.50 cups of dog food every 1 day. So we could pick the point where x is 2 and y is 5. Then we can just divide y by x or 5/2 which gives us our constant of proportionality of 2.50 or 2.5.
Tags
CCSS.8.EE.B.5
2.
MATH RESPONSE QUESTION
2 mins • 1 pt
Natasha has a job putting letters in envelopes to be mailed. In 1 hour she put 42 letters in envelopes. Write an equation best represents y, the total number of letters Natasha puts in envelopes in x hours if she continues at this rate.
Mathematical Equivalence
ON
Answer explanation
Since the constant of proportionality is 42 letters in 1 hour we can just multiply x by 42 to get y, the total number of leters Natasha puts in envelopes for ay gven amount of hours.
Tags
CCSS.6.EE.C.9
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pamela rode her bike at a constant rate of 0.1 kilometers per minute. Which x values will complete the table that represents the relationship between the number of minutes, x and the number of kilometers, y?
0.2, 0.3, 0.4
0.1, 0.1, 0.1
10.1, 15.1, 20.1
1.0, 1.5, 2.0
Tags
CCSS.5.OA.B.3
4.
MATH RESPONSE QUESTION
2 mins • 1 pt
If a person burns 90 calories by climbing 18 flights of stairs, how many flights of stairs would they need to climb to burn 100 calories?
Mathematical Equivalence
ON
Answer explanation
The constant of proportionality is 5 calories for 1 flight of stairs. So all you would need to do is divide the calories by 5 and you would get the correct number of flights of stairs.
Tags
CCSS.6.RP.A.3B
5.
MATH RESPONSE QUESTION
2 mins • 1 pt
Cheddar cheese costs $4.25 per pound. Write an equation that represents y, the total cost of x pounds of cheddar cheese.
Mathematical Equivalence
ON
Answer explanation
The constant of proportionality is $4.25 every 1 pound, so you would just multiply x, the pounds of cheddar cheese by 4.25 to get y, the total cost.
Tags
CCSS.6.EE.C.9
6.
DROPDOWN QUESTION
1 min • 1 pt
(Use The Picture) Layla read (a) books in the first (b) months she was a member of the book club.
Tags
CCSS.HSF.LE.B.5
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of these does NOT represent the distance a car travels when going 55 miles per hour?
d=55t, where d represents distance in miles and t represents time in hours.
In 3 hours a car will travel a distance of 160 miles.
Answer explanation
If the car travels at 55 miles per hour then it will travel 165 miles in 3 hours not 160 miles. You just have to multiply the hours by the 55 miles to get the total miles traveled since the constant of proportionality is 55 miles per hour.
Tags
CCSS.8.EE.B.5
8.
GRAPHING QUESTION
3 mins • 1 pt
An artist is making a scale model of a statue. On the model 2 inches represents 1 foot on the actual statue. create a graph that best represents this relationship.
Answer explanation
The constant of proportionality is 1 foot per every 2 inches which is 1/2 or 0.5. So the best point to plot would be when x is 8 and y is 4 because 4/8 is 1/2 or 0.5 which is the constant of proportionality.
Tags
CCSS.7.RP.A.2C
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