Use the slope and a given point to substitute for and in the point-slope form , which is derived from the slope equation .
Simplify the equation and keep it in point-slope form.
Solve for .
Apply the distributive property.
Multiply by .
Move all terms not containing to the right side of the equation.
Subtract from both sides of the equation.
Subtract from .
List the equation in different forms.
Find the Equation Using Point-Slope Formula (10,-9) ; m=-2