IMAT 2012 Q79 [Graphs]

The line L has equation y = 2x ­- 1.

Four of the following five points are the same distance from the line L. Which one is at a different distance?

A. (1, ­-1)
B. (1, 3)
C. (4, 9)
D. (6, 9)
E. (5, 13)

The best way to answer this question would be to draw a quick sketch of the line and the points, because it quickly becomes obvious our answer is E.