Organize your data and find the rate of change.
a. create a table of the measurements for your data. label the forearm measurements as your input and the foot measurements as your output.

b. select two sets of points and find the rate of change for your data.

c. describe your results. if you had to express this relation as a verbal statement, how would you describe it?

A .E is 7 inches for the left arm
E is 8 1/2 inches for the left foot
the inputs look like the length of the arm (ie x) the outputs are the length of the foot 
rate of change=change in y change in x use the data you gathered or this equation they give you  = 0.860 •  + 3.302

B. find the difference in y, then the difference in x, then divide (y over x) to get the slope
8-7/7 1/2-6 1/2 = 1/1 =1

C.you plug in any (x,y) point you used to find the slope
Solve for B
y = mx+b y = 1*x + b 7.5 = 1*8 + b b =
7.5 - 8 = -0.5
y = x - 0.5

Hope this helps