=+50. Refer to Exercise 49. Consider predicting speed from stride rate, so that the response variable y is speed. Suppose that the values of speed in the sample are expressed in meters/second. How does this change in the unit of measurement for y affect the equation of the least squares line? More generally, if each y value in the sample is multiplied by the same number

c, what happens to the slope and vertical intercept of the least squares line?