Algebra

What are Variables, Constants and Numerical Coefficient​

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​Variables

1. The small case letters of the english alphabet are commonly used in algebra.​

2. ​The most common letters for unknown numbers are x,y,z.

3. ​Variables have no fixed value.

4. ​Variables are also called literals

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​Constants

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​Numerical Coefficient

1. ​Quantities with fixed numerical valu are called constants.

2. Ex= 3,9,4,6,11

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1. ​When a variable is multipled by a constant as in 4x [ we do not use multiplication sign in algebra ] then the constant is called the numerical coefficient of the variable which means 4 times x.

Some Questions Now​

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Multiple Choice

Which of these is a constant

• 4x

• 4

• x

Multiple Choice

Which of these is a Variable

• 4x

• 4

• x

Multiple Choice

Which of these is a Numerical coefficient

• 4x

• 4

• x