Engineering Board Exam Reviewer · Distance Between a Point & a Line · hard
CE Board November 1992: The two points on the line 2x-3y+4=0 which are at a distance 2 from the line 3x+4y-6=0 are
(-5,1) and (-5,2)
(64,-44) and (4,-4)
(8,8) and (12,12)
(44,-64) and (-4,4)
Answer
B. (64,-44) and (4,-4)
Solution
Substituting a point ≤ft(x, 2x+4/3 ) on the line 2x-3y+4=0 into the distance formula to the line 3x+4y-6=0 and solving the resulting equation gives the two points (64,-44) and (4,-4).