SOLUTION: Students measure the circumference and diameter of a number of circular objects and graph the circumference on the y axis and the diameter on the x axis. The students then draw a l

Algebra ->  Graphs -> SOLUTION: Students measure the circumference and diameter of a number of circular objects and graph the circumference on the y axis and the diameter on the x axis. The students then draw a l      Log On


   

Question 119490: Students measure the circumference and diameter of a number of circular objects and graph the circumference on the y axis and the diameter on the x axis. The students then draw a line that seems to best fit the data points. How can the students use their graphs to estimate the value of pi?
a. find the length of the line
b. find the slope of the line
c. find the y intercept of the line
d. find the midpoint of the line
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
pi%2Ad will be plotted on the y-axis
d will be plotted on the x-axis
The slope is (change in y) / (change in x)
If x=10, y+=+10%2Api
If x=50, y+=+50%2Api etc.
The slope is pi
so, (b) is correct