Answer
The residual plots show no discernible pattern, and the plot of residuals shows that the residuals are normally distributed. We can conclude that the linear model is appropriate.
Work Step by Step
See the picture.
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.