SOLUTION: Please help Find the equation of the line that passes through (3,-1) and is perpendicular to the line y-2x=10?

Question 289207: Please help Find the equation of the line that passes through (3,-1) and is perpendicular to the line y-2x=10?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
(3,-1) and is perpendicular to the line
y-2x=10
y=2x+10 this line has a slope=2 (red line)
A perpendicular line would have a slope=-1/2.
Y=mX+b
-1=-1/2*3+b
-1=-3/2+b
b=-1+3/2
b=-2/2+3/2
b=1/2 the Y intercept.
y=-x/2+1/2 (green line).
Proof:
(graph 300x300 pixels, x from -10 to 10, y from -10 to 10, of TWO functions 2x +10 and -x/2 +1/2).
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