SOLUTION: Find an equation of the line passing the point ( 1, 2 ) and is parallel to the line y=- 1/2 x

Algebra ->  Finance -> SOLUTION: Find an equation of the line passing the point ( 1, 2 ) and is parallel to the line y=- 1/2 x      Log On


   

Question 1167122: Find an equation of the line passing the point ( 1, 2 ) and is parallel to the line y=- 1/2 x
Found 2 solutions by greenestamps, ikleyn:
Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


The slope of the given line is -1/2.

The slope of any line parallel to the given line is also -1/2.

So the equation of the line you are looking for is of the form

y+=+%28-1%2F2%29x%2Bb

To determine the value of b, substitute the x and y coordinates of the known point.

2+=+%28-1%2F2%29%281%29%2Bb

Solve using basic algebra....

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
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For this subject,  there is a lesson in this site
    - Equation for a straight line parallel to a given line and passing through a given point


Read it and find there the complete explanation on how to do it.


From this lesson,  learn the subject once for all.