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According to the census there were 61 people per square mile. ( This is called the population density) in a certian company in 1980. By 2000, the number of people per square mile, had grown to 77. Use this information to develop linenar equation in slope-intercept form. In developing the equation, think of 1980 as year zero let x be the time in years and let y be the population density, Write a linear equation in slope-intercept form to model the given information.

The equation is?

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