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Answer: Algebra makes the use of combinations of letters that are known as variables in order to represent the numbers that are termed as constants. The operations of addition, subtraction, multiplication, and division are then used to connect together the above set of variables and constants to form an algebraic expression as given in the question.
Now, the coefficient of a variable quantity is the numerical value (any positive or negative) positioned right before it as a factor that multiplies it.
In the above given algebraic expression, the constant 4 is the factor of multiplication of the variable quantity x and hence the coefficient of x in the expression 4x + 3y is 4.
