When writing the equation of a line, you'll often 
be asked to put that equation in standard form.
Standard form is written Ax + By = C where A, B, and C are all integers. 
In other words, no fractions and A or the 
coefficient of the x term must be positive.
So that a good example of an equation of a line 
written in standard form might be 2x + 3y = 4.