Record distances in the triple jump World record distances (in meters) for the triple...

Record distances in the triple jump

World record distances (in meters) for the triple jump are listed in the table.

(a) Plot the data.

(b) Find a line of the form D = aY + b that approximates these data, where D is the distance and Y is the year. Graph this line together with the data on the same coordinate axes.

(c) Use the line to predict the record distance in 1985, and compare it with the actual record of 17.97 meters.

(d) Interpret the slope of this line.