The distance is 3.16 (label whatever is appropriate)
No it is not linear because it would make a curved line
According to these numbers, in 2010 the federal debt per capita was $43,888.75. Hope this helps!
Answer: (1,2) and (-1,4)
Step-by-step explanation:
Slope = 
The slope of the line given is - 1
Checking which of the ordered pair has the same slope , the formula will be used to check , and the only pair that will give - 1 is (1,2) and (-1,4)