8th Grade Linear Relationships Quiz

A tank is being filled with water. It contains 10 liters after 2 minutes and 25 liters after 5 minutes. Time (min) | Volume (L) 2 | 10 3 | 15 4 | 20 5 | 25 What equation represents this relationship?

• y = 5x

• y = 2x

• y = 3x

• y = x + 5

Sasha earns $12 for walking 1 dog and $5 more for each additional dog. What is the slope of this relationship?

• 12

• 5

• 15

• 4

A movie streaming service charges a $5 membership fee plus $3 per movie. Which equation models the cost?

• y = 3x

• y = 3x + 5

• y = 5x + 3

• y = x + 3

A factory produces 100 units per hour. Hours | Units 1 | 100 2 | 200 3 | 300 4 | 400 What is the rate of change?

• 100

• 300

• 400

• 500

What is the slope of the line?

• 1

• 2

• 3

• 4

What does the slope represent in this context?

• Time

• Speed

• Total distance

• Acceleration

What equation represents the relationship?

• y = 15x

• y = 30x

• y = 10x

• y = 20x

Is this a proportional relationship?

• Yes, it starts at 0

• No, it starts at 1

• No, slope changes

• Yes, slope is 3

What is the rate of elevation gain?

• 50 ft/hr

• 100 ft/hr

• 200 ft/hr

• 300 ft/hr

• Carolyn was given 200 stamps, and she will buy 50 stamps every month.

• Carolyn was given 180 stamps, and she will buy 70 stamps every month.

• Carolyn was given 180 stamps, and she will buy 50 stamps every month.

• Carolyn was given 200 stamps, and she will buy 70 stamps every month.

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