SOLUTION: i need to find a line that a passes through the points (-1,9) and (-6,-6) and a line b that passes through (-7,n) and (0,-2) it needs to have a value of n to make the line paralle

Algebra ->  Coordinate-system -> SOLUTION: i need to find a line that a passes through the points (-1,9) and (-6,-6) and a line b that passes through (-7,n) and (0,-2) it needs to have a value of n to make the line paralle      Log On


   

Question 383395: i need to find a line that a passes through the points (-1,9) and (-6,-6) and a line b that passes through (-7,n) and (0,-2)
it needs to have a value of n to make the line parallel and one to make it perpendicular. i don't get how to do this. thank you
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


The slope of a line is given by



where and are the coordinates of the given points.

So your two slopes are:



and



Then use



And solve



to get the value of for the parallel line.

Then use



And solve



to get the value of for the perpendicular line.

John

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