8th Grade Unit 5 Test Corrections

Which graph does NOT represent y as a function of x?

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Which representation shows y as a function of x?

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Tags

CCSS.8.F.A.1

Determine whether the situation represents a proportional or non-proportional relationship.

Maria is paid $16 per hour for babysitting.

• Proportional

• Non-proportional

Tags

CCSS.7.RP.A.2A

Determine whether the situation represents a proportional or non-proportional relationship.

Alex rented a sailboat at a lake for $20 an hour plus $12 for his life jacket.

• Proportional

• Non-proportional

Tags

CCSS.7.RP.A.2A

Determine whether the situation represents a proportional or non-proportional relationship.

Mark's carpet cleaning service charges $50 dollars for a service fee plus $25 per hour.

• Proportional

• Non-proportional

Tags

CCSS.7.RP.A.2A

Determine whether the situation represents a proportional or non-proportional relationship.

Cindy purchases apples at the grocery store for $2.99 per pound.

• Proportional

• Non-proportional

Tags

CCSS.7.RP.A.2A

On a field trip, there are 3 adults for every 45 students. Which graph models a relationship with the same unit rate?

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Tags

CCSS.8.EE.B.5

A serving of cauliflower has twice as many calories as a serving of asparagus. This relationship can be expressed by the equation y = 2x, where x is the number of calories in a serving of asparagus and y is the number of calories in a serving of cauliflower. Select the answer choice that shows the correct y values.

• 1, 2, 1.5, 4

• 2, 4, 3, 8

• 4, 6, 5, 10

• 4, 8, 6, 16

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.A.1

At a restaurant, 600 customers were served during a 10-hour period of time. Which graph has a unit rate that best represents the number of customers that were served per hour at this restaurant?

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Tags

CCSS.8.EE.B.5

An aquarium is being filled with water. The graph shows the height of the water over time as the aquarium is being filled. Which statement best describes the rate of change for this situation?

• The height of the water increases 20 inches per second.

• The height of the water increases 1 inch per second.

• The height of the water increases 5 inches per second.

• The height of the water increases 2.5 inches per second.

Tags

CCSS.HSF.IF.B.4