What is a constant

The video tutorial explains the concept of constants in mathematics, highlighting their unchanging nature compared to variables. It discusses how constants are used in mathematical expressions, particularly in quadratic expressions, and emphasizes that a constant is a number not multiplied by a variable. The tutorial provides a clear distinction between variables, which can change, and constants, which remain the same.

What does the term 'constant' imply in mathematics?

• A value that changes frequently

• A value that remains the same

• A variable that can be adjusted

• A number that is always zero

How is a variable different from a constant?

• A variable is a fixed number, while a constant changes

• A variable is represented by a number, while a constant is a letter

• A variable can change its value, while a constant remains the same

• A variable is always positive, while a constant is negative

In the expression 4 * X, what is the role of '4'?

• It is a constant

• It is an unknown

• It is a variable

• It is a quadratic term

Which of the following is an example of a constant in a quadratic expression?

• -2

• 4 * X

• X + 1

• X^2

What happens to a constant when the value of a variable changes?

• The constant changes as well

• The constant becomes a variable

• The constant remains unchanged

• The constant disappears