Sagot :
Answer:
variables are x and y.
Step-by-step explanation:
In algebraic expressions, letters represent variables. These letters are actually numbers in disguise. In this expression, the variables are x and y. We call these letters "variables" because the numbers they represent can vary—that is, we can substitute one or more numbers for the letters in the expression.
Answer:
Actually , It depends of what they have given...
But usually they used x and y the most