(10 points and brainliest for best)
use the number line to determine each sum.

(everything is in the attachment)

1) -3

2) -3

3) -9

Just use your calculator or follow the instructions and use the number line.

Step-by-step explanation:

8 + ( - 11 ) = - 3

because - 11 is below 0, so you add 8 to that, which makes -3.

- 10 + 7 = -3

- 4 + ( - 5 ) = -9

A negative + a negative means it gets smaller