Mathematics
Grade6
Easy

Question

Write the coefficient of x in the following:
3x + 5

  1. 3
  2. 5
  3. 1
  4. 0

Hint:

The above expression represents an algebraic expression. Algebraic expression has two components, variable and constant. A variable is a quantity which doesn't have a fixed value. A constant is a quantity with a fixed value. A variable is generally represented by alphabets. And constant is a numerical value. In the above expression we have to find a coefficient of the variable x.

The correct answer is: 3


    The given expression is 3x+5.
    We have to find coefficient of the variable x. Now coefficient is a constant that is placed before a variable. It means the number which a variable is multiplied by is called coefficient. In the above expression the variable is x. And we can see x is multiplied by number 3 or in other words 3 is placed before x. So, the coefficient of the variable x is 3. Also, note that 5 is only a constant. There is no variable attached to it.
    Therefore, option (a) which is '3' is the right answer.

    A coefficient always have to be a constant. A variable cannot be counted as coefficient. It should be fixed value.

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