SOLUTION: write the slope intercept form equation through (1,-2) and perpendicular to the line 2x-4y=7

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: write the slope intercept form equation through (1,-2) and perpendicular to the line 2x-4y=7      Log On


   

Question 829520: write the slope intercept form equation through (1,-2) and perpendicular to the line 2x-4y=7
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
If the lines are perpendicular,....

First, you can put the given equation into slope-intercept.
-4y=-2x%2B7
y=%281%2F2%29x-7%2F2
And you want a perpendicular line, slope of -2.

y=%28-2%29x%2Bb and you find b solving the equation for b, and putting in the given point to be contained:
b=y-mx
b=y+2x
b=-2+2*1
b=0

You line to be found: highlight%28y=-2x%29