Question 1060611
Use parentheses then you don't have to explain.
y=(1/2)x+17
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Perpendicular lines have slopes that are negative reciprocals,
{{{(1/2)*m[2]=-1}}}
{{{m[2]=-2}}}
So then using the point slope form,
{{{y-0=-2(x-1)}}}
{{{highlight(y=-2x+2)}}}