Graphing a Linear Relationship

Tasha's cell phone plan has a $20 start up fee and then it is $15 per month. Complete the table below for the first 4 months and then graph the relationship.

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Fill in the table below.

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What is the slope of the table?

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What does the slope represent in this situation?

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Graph the relationship using your table.

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What is the y-intercept?

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What does the y-intercept mean in this situation?

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What is the equation for this linear relationship?

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Fill in the table below.

What is the slope of the table?

What does the slope represent in this situation?

Graph the relationship using your table.

What is the y-intercept?

What does the y-intercept mean in this situation?

What is the equation for this linear relationship?

This situation represents a proportional relationship.