Jacob has a certain amount of fencing he wants to use to make a dog run. If he makes the length 36 feet, the width will be 9 feet, but if he makes the length 40 feet, the width will be only 5 feet. Write an equation in the form y = mx + b that can be used to find the width, y, for any given length x.

Question

danjs · Answer

Same type of thing here... 2 points are given on the line

(Length, width) = (x,y)

(36,9)   and  (40,5)

danjs · Answer

calculate the slope m, and use one of the points (x1,y1) in 

y - y1 = m*(x - x1)