MathDB
Three Collinear Points

Source:

June 13, 2009
analytic geometrygraphing linesslope

Problem Statement

The points (2,\minus{}3), (4,3) (4,3), and (5,k/2) (5, k/2) are on the same straight line. The value(s) of k k is (are): (A)\ 12\qquad (B)\ \minus{}12\qquad (C)\ \pm 12\qquad (D)\ {12}\text{ or }{6}\qquad (E)\ {6}\text{ or }{6\frac{2}{3}}