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what is the slope intercept form of a line that passes through (3,-5) and is perpendicular to y=3/2x+2

 Oct 12, 2015
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The slope of the line  y  =  3/2x + 2  is  3/2.

The slope of any line perpendicular to this line has a slope that is its negative reciprocal; the negative reciprocal is  -2/3.

The point-slope form for a line is:  y - y1  =  m(x - x1).

For this problem,  m  =  -2/3     x1  =  3     and     y1  =  -5.

Substituting, we get:     y - -5  =  (-2/3)(x - 3)

Simplifying:                   y + 5  =  (-2/3)(x - 3)

Multiplying:                   y + 5  =  (-2/3)x  + 2

Adding 3 to both sides:     y  =  (-2/3)x + 7

 Oct 12, 2015

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