Answer:
x = 4
Step-by-step explanation:
Standard form is something in the pattern ...
... ax + by = c
Where "a" , "b", and "c" represent integers. "a" and "b" cannot both be zero, and all integers should be relatively prime. The leading coefficient, "a" (or "b" if "a" is zero) should be positive.
The equation ...
... x = 4
meets these requirements, so is in standard form. (Of the equations offered, this is the only one that is actually the equation of the line.)
