Answer:

Step-by-step explanation:
1. you distrubute the -4 to the -2x and +7.
2.you combine like terms.
3.you get X in one side of the equation.
4.You divide 1 by 6.
1.2625 i dunno if this is correct though on my calculations
1 2/5 made into a decimal is 1.4, so 5.6 × 1.4 = 7.84
(3,9) is the outlier since it is the farthest away from the other points.