An equation in standard form must be is in this,

But first, let's make an equation in the slope-intercept form before transforming it into the standard one. We get,

Given:
m = 3
(x, y) = (-9,0)
Let's solve for the y-intercept (b) substituting the given in the formula.


The equation, in Slope-Intercept Form, will be,

Arranging it into a Standard Form, we get,

Therefore, the equation of the line in standard form is 3x - y = -27.