Slope and Slope Intercept Form

Which of the following items represents a proportional relationship?

• Daunte joined planet fitness. He had to pay an annual flat fee of $45 and a membership fee of $25 per month.

• Michelle went to American Eagle to buy some jeans. The jeans were $40 each or she could buy two pairs for $60.

• Jaxon signed up for a new cell service. It cost Jaxon $35 to start the service and $0.30 per minute.

• Kamarria pays $11.99 a month for her Netflix subscription.

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8.AR.3.1

A linear relationship is given. Determine the slope of the relationship.

Mathematical Equivalence

ON

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8.AR.3.2

Write an equation for the linear relationship.

Mathematical Equivalence

ON

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8.AR.3.3

A linear relationship is given. Determine the slope of the relationship.

The slope is ​ (a)   . This ​ (b)   a proportional relationship. The graph of this relationship ​ (c)  

• 50
• is
• would go through the origin.
• is not
• 0.02
• 100
• would not go through the origin.

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8.AR.3.1

Alexia earns $14.75 an hour as a hostess at a local restaurant. She earns an additional $30 in tips each night from take-out orders. Determine if this linear relationship is proportional.

• It is not proportional. There is no constant rate. The y intercept is $14.75.

• It is proportional. The constant rate is $14.75 and the y intercept is $30.

• It is not proportional. The constant rate is $14.75 and the y intercept is $30.

• It is proportional. The constant rate is $14.75 and the y intercept is the origin.

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8.AR.3.1

The slope of the line is ​ (a)   and it represents the ​ (b)  

• -720
• rate of gallons per hr that the water is draining.
• -1440
• -2880
• -360
• rate hrs per gallon that the water is draining
• rate hrs per gallon that the water is draining.
• rate of gallons per hr the the water is filling.
• rate per gallon that the water is filling.

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8.AR.3.2

Select the equation below that represents this linear function shown in the table.

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8.AR.3.3