Homework Help: math

Posted by jojo on Monday, October 26, 2009 at 4:47pm.

Please help me solve this problem... thanks!

1.Find the equation of the line that cntains the pont (5, -1) and has slope -1/2

2.find the equation of the line that passes through the points (-2,1) and (1,-5)

math - Reiny, Monday, October 26, 2009 at 4:56pm
Easiest way, since you don't specify which form you want your equation in.
(based on the fact that for Ax + By = C 0, the slope is -A/B)

1. Slope = -1/2
so the equation is x + 2y = C
plug in point, 5 - 2 = C
C = 3
so ..... x + 2y = 3

from there you can change it to any form they ask for.

try the second one the same way.

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