How do you tell if you will be using addition or subtraction?

We know that
• The slope is -12.
,• The point is (5, 3).
First, we use the point-slope formula.
[tex]y-y_1=m(x-x_1)[/tex]Where,
[tex]\begin{gathered} x_1=5 \\ y_1=3 \\ m=-12 \end{gathered}[/tex]Let's use these values to find the equation.
[tex]y-3=-12(x-5)[/tex]As you can observe, the signs are negative because the formula is that way.