Question 336922
Convert both to slope-intercept form, {{{y=mx+b}}}
{{{8x-7y=2}}}
{{{-7y=-8x+2}}}
{{{y=(8/7)x-2/7}}}
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{{{8y-7x=5}}}
{{{8y=7x+5}}}
{{{y=(7/8)x+5/8}}}
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Perpendicular lines have slopes that are negative reciprocals.
{{{m1*m2=-1}}}
{{{(8/7)(7/8)=-1}}}
{{{1=-1}}}
False, they are not perpendicular.

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{{{graph(300,300,-10,10,-10,10,(8/7)x-2/7,(7/8)x+5/8)}}}