Define an integer: Step 1: Define an integer.An integer is any whole number, including negative numbers, 0, and positive numbers without any fractional or decimal part.
Analyze the number 6: Step 2: Analyze the number 6. 6 is a whole number without any decimal or fractional parts.
Compare 6 to the definition: Step 3: Compare 6 to the definition of an integer.Since 6 fits the definition of being a whole number, it is an integer.