-10m - 6m -8 -6m = −22m −8
It’s on open dot because it doesn’t include the 4 and it shades all the numbers greater then 4 (so it goes to the right).
Answer:
C. 
Step-by-step explanation:
You can use the formula to find the slope: 
(-1.5, 1.5) & (1.5, 0)

The slope is 
Yes. They both mean the same thing.