\"\"

\

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

\

Substitute slope m = 1 and \"\" in point–slope form line equation

\

\"\"

\

\"\"

\

\"\"          (Product of two same signs is positive)

\

\"\"                   (Useing distributive property: \"\")\"\"

\

Rewrite the above equation in standard form,

\

\"\"        (Subtract y from each side)

\

\"\"        (Apply commutative property of Addition: a + b = b + a)

\

\"\"             (Apply additive inverse property: \"\")

\

\"\"                (Apply additive identity property: \"\") \"\"

\

\"\"    (Subtract 3 from each side)

\

\"\"          (Apply additive inverse property: \"\")

\

\"\"               (Apply additive identity property: \"\")

\

\"\"                     (Subtract: \"\")

\

\"\"

\

\"\"

\

The line equation in standard form is \"\".