What is the slope of the line that is perpendicular to the line that passes through the points (3, -7) and (-3, 5)?

Answer 1

(3,-7) to (-3,5) has slope =-12/6 = -2 = "rise over run" i.e. change in y divided by change in x coordinates

the line perpendicular to the line through the two points has slope 1/2, the negative inverse of -2