How many numbers have a difference of 100

Please I need to know!!!!!! It's for a math assignment. How many numbers, when subtracted equal, or have a difference of 100? Thanks for your help.

It's infinite

Do you mean, how many pairs of numbers? It takes two numbers to have a difference, you know! But in that case, wouldn't you already know that there are infinitely many?
x and x + 100
for any choice of x

Or do you mean, how many numbers have a difference of 100 with some particular number, x? I would think that should be equally obvious -- two:
(x - 100) and (x + 100)

So what did you actually have in mind to ask?

There are infinitely many pairs, {x, y}, such that x - y = 100.

infinitely many