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 table below shows the heights​ (in feet) and the number of stories of six notable buildings in a city.  Height, x    Stories, y 778    51 621    47 519    46 510    42 494    39 473    38 (a) x=499 feet ​(b) x=641 feet

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