Answer:
Up
Step-by-step 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 {[tex]x^{2}[tex] is negative it opens down.
b) If y is squared it opens side ways right or left. It its coefficient of [tex]y^{2}[/tex]
Hence in our equation of parabola
[tex]y = x^ 2-4[/tex]
x is squared and its coefficient is positive , hence it opens up towards positive y axis.