Graphing Proportional Relationships

Find the slope of the line.

Dev keeps a record in graph form of how far his car travels and the number of gallons of gasoline it uses. What is the unit rate (slope) of the graph?

• 64 miles per gallon

• 128 miles per gallon

• 32 miles per gallon

• 16 miles per gallon

Ross walked 7 miles in 2 hours. What is his unit rate in miles per hour?

• 3.5 miles per hour

• 7 miles per 2 hours

• 7.2 miles per hour

• 3 miles per hour

Calculate the slope!

Mason ran 3 miles in 20 minutes. What is his unit rate of miles per hour?

• 3 miles per hour
• 9 miles per hour
• 0.15 miles per hour

• 6.67 miles per hour

A shopper bought a 12-pound bag of oranges for $18.75. What was the unit price?

• $6.75 per pound

• $0.64 per pound

• $30.75 per pound

• $1.56 per pound

Find the slope of the line.