Question 684110
Put into slope intercept format
5x - 6y = 19
-6y = 19 - 5x
y = 5/6x - 19/6
...
6x + 5y = -30
5y = -30 - 6x
y = -6/5x - 6
...
With slopes of {{{5/6}}} and {{{-6/5}}}, which are negative reciprocals, 
the lines are {{{highlight_green(perpendicular)}}}.
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