Find the value of k so that the line containing the points (−8,8) and (2,k) is perpendicular to the line containing the points (14,−8) and (9,−6).
slope of given line: -2/5
slope of ┴ line: 5/2
(k-8)/(2+8) = 5/2
solve for k
slope of ┴ line: 5/2
(k-8)/(2+8) = 5/2
solve for k