Precalculus: Mathematics for Calculus, 7th Edition

Published by Brooks Cole
ISBN 10: 1305071751
ISBN 13: 978-1-30507-175-9

Chapter 11 - Section 11.1 - Parabolas - 11.1 Exercises - Page 788: 10

Answer

IV

Work Step by Step

Since x is squared, the parabola is parallel to the y-axis. In order to find which vertical direction the parabola is facing, we must isolate the variables in the formula given. $12y+x^2=0$ Subtract 12y from both sides $x^2=-12y $ We now know that the parabola is facing downwards, due to the negative -12y.
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