Drag the missing word into place

In this problem, x is a ___
. It is a placeholder for any number.
ratio
variable
coordinate plane

In this problem, x is a variable. It is a placeholder for any number.

To find the missing word that completes the sentence, we can use the context clues provided. The sentence states that "x is a ___." and also mentions that "it is a placeholder for any number."

By understanding these clues, we can identify that the missing word is "variable". A variable is a term used in mathematics to represent a value that is subject to change, acting as a placeholder for any possible number.

In this problem, x is a ___

. It is a placeholder for any number.

ratio
variable
coordinate plane