111.28.B.4.b Slope as Unit Rate on a Graph

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Grade 8
Math (Archived)
Texas Essential Knowledge and Skills (TEKS)

8.4.B: Proportionality

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Q 1/10
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Annie is selling chocolate bars for school. The cost of 12 bars is $18. Which graph has a slope that best represents the average cost of the lunches in dollars per candy bar?
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10 questions

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Q1
Annie is selling chocolate bars for school. The cost of 12 bars is $18. Which graph has a slope that best represents the average cost of the lunches in dollars per candy bar?
30s
8.4.B: Proportionality
Q2
Aaron was selling prom pictures at 20 pictures for $55. Which graph has a slope that best represents the average cost of the pictures in dollars per picture?
30s
8.4.B: Proportionality
Q3
A pitcher contains 60 fluid ounces of sweet tea and 40 fluid ounces of unsweet tea. Which graph has a slope that best represents the ratio of sweet tea to unsweet tea in this pitcher?
30s
8.4.B: Proportionality
Q4
William ran a 8-mile race in 64 minutes. Which graph has a slope that best represents William's average rate of speed during the race?
30s
8.4.B: Proportionality
Q5
An airplane is descending at a rate of 5000 miles every 4 minutes. Which graph has a slope that best represents this rate?
30s
8.4.B: Proportionality
Q6
A 55 gallon water cooler loses 2 gallons every 6 cups poured. Which graph has a slope that best represents this rate?
30s
8.4.B: Proportionality
Q7
Jonathan pays a total of $18 for every 8 bags of popcorn bought. Which graph models a relationship with the same unit rate?
30s
8.4.B: Proportionality
Q8
A vase is being filled with water. The graph shows the height of the water over time as the vase is being filled. Which statement best describes the rate of change for this situation?
The height of the water increases 1.5 inches per minute.
The height of the water increases 1 inch per minute.
The height of the water increases 2 inches per minute.
The height of the water increases .5 inches per minute.
30s
8.4.B: Proportionality
Q9
A tree is growing every year at a constant rate. The graph shows the height of the tree over time as it grows. Which statement best describes the rate of change for this situation?
The tree is growing 2 inches per year.
The tree is growing 4/3 inches per year.
The tree is growing 6 inches per year.
The tree is growing 8 inches per year.
30s
8.4.B: Proportionality
Q10
In an aquarium a fish tank has limits for every type of fish. This one tank has limits of 5 fish per 60 gallons. Which graph models a relationship with the same unit rate?
30s
8.4.B: Proportionality