Analyze the columns below and complete the instructions that follow. column a column b the slope of the line through the points (-8,15)and (-8,-9) the slope of the line through the points(3,-10) and (3,11) compare the quantity in column a with the quantity in column b. a. the slope in column a is greater. b. the slope in column b is greater. c. the slopes in the two columns are equal. d. the slopes in the two columns are undefined.