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##