Question

Which written description best describes the equation?

y = 1.5x
• Cheryl buys candy at $1.50 per bag.
• The total price of Cheryl's purchase was $1.50
• Cheryl purchase was $1.50 more than what she spent yesterday.

The distance a car drives, in miles, is proportional to the number of gallons of gas it uses. This graph shows this relationship.

What is the unit rate?
• 105 miles per gallon
• 5 miles per gallon
• 21 miles per gallon
• 1 mile per gallon

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Answer 1

Cheryl buys candy at 1.50 per bag

The unit rate of the graph is 21 miles per gallon.

Explanation:

1.5x means 1.50 per candy that is sold.

The graph has 2 points

(1,21)

(5,105)

105-21=84

5-1=4

84/4

21