d Find the equation of the regression line for the given data. Then construct a scatter plot of the data and draw the regression line. (The pair of variables have a significant correlation.) Then use the regression equation to predict the value of y for each of the given x-values, if meaningful. The number of hours 6 students spent for a test and their scores on that test are shown below. Hours spent studying, x 1 2 3 3 5 6 Test score, y 40 45 52 49 61 73 (a) x = 2 hours (c) x = 13 hours (b) x = 4.5 hours (d) x = 2.5 hours Find the regression equation. = x+ (Round the slope to three decimal places as needed. Round the y-intercept to two decimal places as needed.)