Functions and Linear Relationships

Which linear function lited has a negative slope?

• Function 1

• Function 2

• They both have a negative slope.

• Neither, both slopes are positive.

Which of the following are linear functions? Select all that apply.

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The graph shows Lee’s running speed during an hour-long workout. What total amount of time did Lee spend running at a constant speed?

• 10 minutes

• 20 minutes

• 40 minutes

• 50 minutes

How fast was the car traveling in miles per hour (mph) between 25 minutes and 40 minutes?

• speeds between 20 mph and 50 mph

• speeds between 35 mph and 0 mph

• a constant speed of 40 mph

• a constant speed of 50 mph

• the monthly payment amount

• the number of months to pay off the balance

• the number of pieces of furniture bought

• the amount of the down payment

Which equation can be used to graph all the points on the line?

Which graph represents a linear function?

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Which two functions meet the following criteria?

• The y-intercepts have a difference of 3.

• The slopes are both negative.

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• 12 minutes

• 20 minutes

• 75 minutes

• 85 minutes

Pete’s Plumbing charges a flat fee of $28 for a house call and inspection and an additional $35 per hour for any onsite work. Which table represents a cost function with a greater hourly rate than these charges?

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