Question 1092072
{{{y=-2x+7}}}
Perpendicular lines have slopes that are negative reciprocals.
{{{m*(-2)=-1}}}
{{{m=1/2}}}
Use the point-slope form of a line,
{{{y-9=(1/2)(x-8)}}}
{{{2y-18=x-8}}}
{{{x-2y=-10}}}

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*[illustration 351.JPG].