This equation can also be seen on the best fitted line of the graph on a scatter plot. The line is positive and not horizontal meaning there is a relationship. 6. Is it possible to interpret the y-intercept? Explain. Zach 7. If the systolic pressures of two patients differ by 10 millimeters, by how much would you predict their diastolic pressures to differ? Zach 8. Predict the diastolic pressure for a patient whose systolic pressure is 123 millimeters. Zach 9. Find the residual for the predicted value in (8). Zach 10. Is the line a good fit? Why or why not? Zach Systolic Diastolic Systolic Pearson Correlation 1 857 Sig. (2-tailed)