Question 908640
SOLUTION: find the equation of the line that is perpendicular to the line y=2x-3 and passes through the point (-2,1)
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The slope of y=2x-3 is 2.  (Did you know that?)
The slope m of lines perpendicular is the negative inverse, = -1/2
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y-y1 = m*(x-x1)
y-1 = (-1/2)*(x+2)