I´m not sure how to use this information / solve and fill out the chart.
the table shows the heights x (in inches) and shoe sizes y of several students. an equation of the line of best fit is y=0.50x−23.5. make a table of the residuals to verify that the model in the example is a good fit. round all values to the nearest tenth.

height, x l shoe size, y l y-value from model l residual
64 9 8.5 0.5
62 7
70 12
63 8
72 13
68 9.5 10.5 −1
66 9
74 13.5 13.5 0
68 10
59 6.5