The line equation of standard form is  , where A > 0 and A, B, C are integers.

Substitute slope m = 4 and  in point–slope form line equation.

       (Product of two same signs is positive)

        (Apply distributive property: a (b + c) = ab + ac)

                  (Multiply: )

Rewrite the above equation in standard form,

(Add ‘4x’ to each side)

(Apply commutative property of Addition: )

                (Apply additive inverse property: )

                  (Apply additive identity property: )

The line equation in standard form is .