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A 5-mile cab ride costs $9.30. A 11-mile cab ride costs $17.70. Find a linear equation that models cost c as a function of distance d.

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Treat the data as two ordered pairs (5,930) and (11,1770) of the form (d,c)

take the slope, then find the equation in the form
c = md + b ( just like y = mx + b)

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