Simple add them all 2+7+3+7+9 is 28 then divide 28 by the amount of numbers (5) to get 5.6 or if you are rounding to the nearest number 6... Hope this helped ;)
Answer:
PART A:
Line m: 1/2x + 6
Line n: 1/2x - 3
PART B:
The slope is the same in both lines
Answer:
Eather one of the answers above
700 because 10 times 20 is 200 and 500 plus 200 is 700.
y is -2 is the answer for the question