Question

what is the slope of the line that passes through (4,1) and (7,-2)

Answer 1

(4,1)(7,-2)
slope = (-2 - 1) / (7 - 4) = -3/3 = -1

Answer 2

slope = -1   the equation to solve is (y2-y1)/(x2-x1)  (-2-1)/(7-4)