SOLUTION: Find the distance from the point (9,5) to the line 4x - 3y = -4

Algebra ->  Linear-equations -> SOLUTION: Find the distance from the point (9,5) to the line 4x - 3y = -4      Log On


   

Question 14926: Find the distance from the point (9,5) to the line 4x - 3y = -4
Answer by khwang(438) About Me  (Show Source):
You can put this solution on YOUR website!
(9,5) to the line 4x - 3y = -4
The distance from a point P(x,o,yo) to a line ax+by+c = 0 is

d = +abs%28a+x%5Bo%5D+%2B+b+y%5Bo%5D+%2B+c+%29%2F+sqrt%28a%5E2%2Bb%5E2%29+
so, we have d = |36-15+4|/ 5 = 5
(Try to compute with your mind. Absolutely no calculators.)

Kenny