+129852 Rate of change = [ final distance - beginning distance ] / [ final time - beginning time ]
a. Rate of change over the whole trip = Miles / Hours = 350 / 8 = 43.75 mph
b. Between 4th and 5th hour = [300 - 225 ] / [ 5 - 4 ] = 75 / 1 = 75 mph
Between the 5th and 6th hour = [300 - 300] / [ 6 - 5] = 0 / 1 = 0 mph
Between the 6th and 8th hour = [ 350 - 300 ] / [ 8 - 6 ] = 50/2 = 25mph
c. No....if they were....the line would have a constant slope....but it doesn't
d. No...for the same reason given in (c)
