Question 176196
Perpendicular lines have slopes that are negative reciprocals.
{{{m[1]*m[2]=-1}}}
From this line,
{{{y=x-3}}}
The slope is 1.
{{{m[1]*m[2]=-1}}}
{{{1*m[2]=-1}}}
{{{m[2]=-1}}}
A line perpendicular to {{{y=x-3}}} will have a slope of -1.