Answer
See below
Work Step by Step
We can see that $h=5\\k=3$
The standard form for the parabola is $(x-h)^2=4p(y-k)$
With $p=-3$
We have an equation: $(x-5)^2=-12(y-3)$
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.