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Retail Sales Suppose you have a $5-off coupon at a fabric store. You buy fabric that costs $7.50 per yard. Write an equation that models the total amount of money y you pay if you buy x yards of fabric. What is the graph of the equation?

Retail Sales Suppose you have a $5-off coupon at a fabric store. You buy fabric that-example-1

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1. The equation that models the total amount of money y you pay if you buy x yards of fabric with a $5-off coupon is y = 7.50x - 5.

2. The graph of this equation would be a straight line with a slope of 7.50 and a y-intercept of -5.

The coupon discount for the purchase of fabric = $5

The unit cost per yard of fabric = $7.50

Let the number of yards of fabric purchased = x

Let the total amount of money paid for x yards = y

Equation:

y = 7.5x - 5

In the graph, the slope is 7.5 and the y-intercept is -5. The line would start at (0, -5) on the y-axis and increase by 7.50 for every yard of fabric purchased on the x-axis.

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