Question 358557
Slope is {{{(y[2] - y[1])/(x[2] - x[1])}}}
so
{{{-1/3 = (y - (-4))/(x - 6)}}}
{{{-1(x-6) = 3(y+4)}}}
{{{-x +6 = 3y + 12}}}
{{{x - 6 = -3y - 12}}}
{{{x + 3y = -6}}}