SOLUTION: A 150 pound person burns 4.0 calories per minute when walking. A 170 pound person burns 4.6 calories per minute when walking. Write an equation that will model how many calor

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A 150 pound person burns 4.0 calories per minute when walking. A 170 pound person burns 4.6 calories per minute when walking. Write an equation that will model how many calor      Log On


   

Question 1182360: A 150 pound person burns 4.0 calories per minute when walking. A 170 pound person burns 4.6 calories per minute when walking.

Write an equation that will model how many calories (c) are burned by a person of a given weight (w). The rate is calories burned per pound of additional weight.
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
two points define the line
(150, 4.0) and (170, 4.6)
slope is 0.6/20=0.03 cal/pound
use point slope formula y-y1=m(x-x1), m slope (x1, y1) point
y-4=0.03(x-150)
y=0.03x-4.5+4 or
y=0.03x-0.5, x is pounds, y is cal/min.