(#22) Ok first, before we answer anything, let's get organized. All the numbers are out of order and can be very confusing, so lets put them in ascending(rising) order from 0 to 11. That would result in: 0, 0, 1, 2, 2, 2, 2, 2, 3, 4, 4, 4, 4, 5, 5, 6, 8, 9, 11. Now that its in order, its easier to see how many dots to put on top of each number. You would put two on top of 0, one on top of 1, five on top of 2, and so on.
You can construct a residual plot, plotting the x values against the values of the residuals; if there is a non-linear pattern in the residual plot then it would not be suitable to use linear regression, whilst if there is no noticeable pattern (ie. the points are randomly scattered) then the relationship is linear and a line of best fit could be appropriate.
Collect like terms.. 7b-9=30 . Add 9 to both sides to isolate b. 7b= 39. Divide both sides by 7. B=39/7 maybe there was a problem is this equation maybe it was 7b+9=30 instead of 7b-9 =30
