Answer:
2
+ 2
Step-by-step explanation:
= 
= 2
Use this chart, every way it can add up to ten: i.e. 5,5 6,4...
Answer:
999
Step-by-step explanation:
this is the answer but I don't sure.
These lines are perpendicular!
y = x
y = -x–2
The slopes are reciprocals of each other, so they are perpendicular.