The average cost of tuition and fees at private four-year colleges was $16,200, and in 2005 it was $20,100. Sketch a line that passes through the points (2000, 16200) and (2005, 20100).
My question is - find the slope-intercept form of the line in the sketch. What is the y-intercept and does it have meaning in this situation?

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slope = change in tuition / change in years
dont use 2000 and 2005, use 0 and 5 for your x values

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