What is the standard form

It depends what you are talking about but "standard form" means "scientific notation".

 [It is an English (the country) term]

 

Standard form of a line is    Ax+By=C

 

Here are some standard forms

 

http://www.mathsisfun.com/algebra/standard-form.html

$${\mathtt{Y}} = {\mathtt{mx}}{\mathtt{\,\small\textbf+\,}}{\mathtt{b}}$$

.

$${\mathtt{Ax}}{\mathtt{\,\small\textbf+\,}}{\mathtt{By}} = {\mathtt{C}}$$

.

There are different standard forms for different things. You're probably just learning the standard form that is Ax + By = C

 

Standard Form of a Linear Equation

y = mx + b

 

Standard Form of a Polynomial

Ex. x⁶ + 4x³ + 3x² - 7

It is where the exponents are greatest to least

 

Those are only 3 standard forms, and there are a few more I'm pretty sure