59.0k views
1 vote
The parabola y = x² - 4 opens:
A.) up
B.) down
C.) right
D.) left

User Taner
by
5.4k points

1 Answer

4 votes

Answer:

Up

Explanation:

Here the easy rules to remember the orientation of the parabolas are

a) If x is squared it opens up or down. And its coefficient of {
x^(2)[tex] is negative it opens down.</p><p>b) If y is squared it opens side ways right or left. It its coefficient of [tex]y^(2)

Hence in our equation of parabola


y = x^ 2-4

x is squared and its coefficient is positive , hence it opens up towards positive y axis.

User Ryan Thames
by
5.2k points