Question 1099151
So first off, find the y-intercept of the second equation,
Set {{{x=0}}} and solve for y.
{{{7(0)-9y=-9}}}
{{{-9y=-9}}}
{{{y=1}}}
So then all you need is the slope,
{{{y=m[2]x+1}}}
Perpendicular lines have slopes that are negative reciprocals,
So the first line is,
{{{5y=-x-2}}}
{{{y=-x/5-2/5}}}
and 
{{{m[1]=-1/5}}}
So,
{{{-(1/5)m[2]=-1}}}
{{{m[2]=5}}}
So,
{{{highlight(y=5x+1)}}}
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*[illustration CK13.JPG].