SOLUTION: What is the linear equation for "the line is perpendicular to y=2x+1 and passes through (-2,3)" thank you

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Question 831016: What is the linear equation for
"the line is perpendicular to y=2x+1 and passes through (-2,3)"
thank you

Found 2 solutions by stanbon, josmiceli:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
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"the line is perpendicular to y=2x+1 and passes through (-2,3)"
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The given line has slope = 2
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A perpendicular line will have slope = -1/2.
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Form: y = mx + b
Solve for "b":
3 = (-1/2)(-2) + b
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3 = 1 + b
b = 2
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Equation:
y = (-1/2)x + 2
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Cheers,
Stan H.
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Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
If the slope of a line is +m+, then
the slope of any line perpendicular to it
will be +-1%2Fm+
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The slope of +y+=+2x+%2B+1+ is 2
+m+=+2+
+-1%2Fm+=+-1%2F2+
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If the general form of a straight line is
+y+=+m%2Ax+%2B+b+, then so far I have
+y+=+%28-1%2F2%29%2Ax+%2B+b+
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Now I can plug the given point (-2,3)
into this equation
+3+=+%28-1%2F2%29%2A%28-2%29+%2B+b+
+3+=+1+%2B+b+
+b+=+2+
So, the equation is:
+y+=+%28-1%2F2%29%2Ax+%2B+2+
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Here is the plot of the 2 lines:
+graph%28+400%2C+400%2C+-10%2C+10%2C+-10%2C+10%2C+2x+%2B+1%2C+%28-1%2F2%29%2Ax+%2B+2+%29+