Question 356408
Perpendicular lines have slopes that are negative reciprocals,
{{{m[1]*m[2]=-1}}}
{{{-(2/5)*m[2]=-1}}}
{{{m[2]=5/2}}}
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{{{y=(5/2)x+b}}} where {{{b}}} is the y intercept.
{{{highlight(y=(5/2)x+9)}}}
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{{{graph(300,300,-10,10,-10,10, -(2/5)x+2,(5/2)x+9)}}}