Answer
See graph.
Work Step by Step
Start from the graph of $y=x^2$ (red), shrink vertically by a factor of $\frac{1}{3}$ then reflect across the x-axis to obtain $f(x)=-\frac{1}{3}x^2$ (purple).
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.