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A construction crew is lengthening a road. Let y represent the total length of the road (in miles). Let x represent the number of days the crew has worked. Suppose that x and y are related by the equation y= 2x + 57.

A construction crew is lengthening a road. Let y represent the total length of the-example-1
User Jmr
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1 Answer

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Solution

We are given the equation


y=2x+57

(a)

The change per day in the road length is simply the slope of the above line

Therefore, the answer is


2

(b)

To find the length of the road when the crew started working is simply the intercept

Therefore, the answer is 57

User Jeberle
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