Please help, every tutor has gotten this wrong

Instructions: The following is the recorded earthquakes on South Carolina from August, 2016 to February, 2017. Use the data to find the residuals. Then draw a residual plot by hand. Use the residual plot to determine if the linear model is the best regression model for this data. Magnitude Depth (km.) 1.7 2.9 1.1 0.8 1.4 1.9 0.7 3.2 0.8 4.3 1.9 4 1.7 6.3 1.9 6.9 1.9 0.9 1.1 2Source: X Residual (Round to nearest tenth) 1.7 -0.8 X 1.1 -2.1 X 1.4 -1.4 X 0.7 0.7 X 0.8 1.7 X 1.9 0.1 1.7 2.6 1.9 3 X 1.9 -3.0 X 1.1 -0.9 X