Which of the following is true about −9 ?(1 point) Responses It is a whole number but not an integer. It is a whole number but not an integer. It is both an integer and a whole number. It is both an integer and a whole number. It is an integer but not a whole number. It is an integer but not a whole number. It is an integer but not a rational number.

Answer 1

The correct response is: It is an integer but not a whole number.

Here's a brief explanation:

• Whole numbers are non-negative integers (0, 1, 2, 3, ...), so -9 is not a whole number.
• Integers include all whole numbers and their negative counterparts (…, -3, -2, -1, 0, 1, 2, 3, ...), so -9 is an integer.
• Since -9 is an integer, it is also a rational number (as any integer can be expressed as a fraction, such as -9/1).

Thus, -9 is indeed an integer but not a whole number.