How do you write a direct variation equation that passes through the point (5,-6)?

A equation is of the form
##y = m*x## for some constant value ##m##
For a direct variation equation passing through ##(x,y) = (5,-6)##
we have
##-6 = m*(5)##
##rarr m = -6/5##
and the direct variation equation is
##y = (- 6/5)x##
which you might re-write as
##5y = -6x##

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