Question

Define cofficient,variable,constant

Answer 1

coefficent is used before a variable
variable is represented by alphabets
constant has a definite value

Answer 2

VARIABLE:
A Variable is a symbol for a number we don't know yet. It is usually a letter like x or y.
CONSTANT:
A number on its own is called a Constant.
COEFFICIENT:
A Coefficient is a number used to multiply a variable (4x means 4 times x, so 4 is a coefficient)