Is It E. G. or I. E?

They are not interchangeable; each has its own meaning and usage. The abbreviation “i.e.” stands for id est, which is Latin for “that is.” The abbreviation “e.g.” stands for the Latin phrase exempli gratia, meaning “for example.” ... One meal (i.e., breakfast) is included in the price of the room.

How do you use ie and eg?

I.e. is an abbreviation for the phrase id est, which means "that is." I.e. is used to restate something said previously in order to clarify its meaning. E.g. is short for exempli gratia, which means "for example." E.g. is used before an item or list of items that serve as examples for the previous statement.

How do you properly use eg?

e.g. is used to introduce examples in a sentence, so it's always followed by an example or examples. That means e.g. is usually used in the middle of a sentence and never found at the very end. When you use e.g. in a sentence both the letters 'e' and 'g' should be lowercase.