I need help with this question please I don't understand

The systolic blood pressure dataset (in the third sheet of the spreadsheet linked above) contains the systolic blood pressure and age of 30 randomly selected patients in a medical facility. What is the equation for the least square regression line where the independent or predictor variable is age and the dependent or response variable is systolic blood pressure? y = Ex: 1.234 + Ex: 1.234 Patient 7 is 67 years old and has a systolic blood pressure of 170 mm Hg. What is the residual? Ex: 1.234 mm Hg Is the actual value above, below, or on the line? Pick What is the interpretation of the residual? Pick