SOLUTION: Write an equation of the line containing the specified point (-3,7) and perpendicular to the indicated line y=5

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Question 70471: Write an equation of the line containing the specified point (-3,7) and perpendicular to the indicated line y=5
Answer by piglet162431(90) About Me  (Show Source):
You can put this solution on YOUR website!
First, let us find out the slope for the perpendicular line.
This equation:
(5)(m2)=-1
m2=-1/5
The slope of the perpendicular line is -1/5
Now, we need the second piece for the puzzle.
Use the point-slope equation which is y-y2=m%28x-x2%29
Plug them in:
y-7=%28-1%2F5%29%28x-%28-3%29%29
y-7=%28-1%2F5%29x-%283%2F5%29
y=%28-1%2F5%29x%2B%2832%2F5%29
Simplify the last fraction, which becomes 6 and 2/5
Here you go!