Question

Carlos is using a number line to add another integer to –4. He begins by showing –4 on the number line, as shown below. Carlos adds the other integer on the number line and says that the sum is negative.

Answer 1

I had the same question on my quiz
The answer is that The number could be 3 or any integer less than 3.

Answer 2

Carlos must add 3 and less than 3 with -4 to get the sum is negative.

Explanation:

Carlos marked -4 on the number line.

He adds another number and gets the sum is negative.

He can start from 3 and go less than 3 to get the negative number as a result.

-4 + 3 = -1

-4 + 2 = -2

-4 + 1 = -3

and so on.

Therefore, he must add 3 and less than 3 with -4 to get the sum is negative.

Hope this will helpful.

Thank you.