Assume a 115 pound person burns 36 calories after 12 minutes of walking and 54 calories after 18 minutes of walking.
Part 1 : Use calories as the y-coordinate and minutes as the x-coordinate. After writing two ordered pairs, find the slope. What does the slope represent in terms of the information provided?
Part 2 : Write an equation, in slope intercept form, to represent this data.
Part 3 : How many calories will this person burn after 35 minutes of walking? Using complete sentences, explain how the equation, slope, or graph can help to predict calories burned.

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