Question

Which number sentence does the following number line represent?

0-4+7= 3
3+(-4)=-7
04+3=7
3+(-7)=-4

Answer 1

Last option:
`3+(-7)=-4`

Explanation:

The number line can help us to make additions and subtractions.

To add a positive number we need to move the point to the right and to add a negative number we need to move the point to the left.

You can observe in the figure that the point on the number line is moved from 3 to -4, then it is moved 7 places to the left. Therefore, you can express it in the following form:

`3+(-7)`

This is:

`3+(-7)=3-7=-4`

Then the number line represents this number sentence:

`3+(-7)=-4`