up
step-by-step explanation:
the orientation of the parabolas can easily be found by analysing the power of x and y and their signs. if x is squared , parabola opens up and also if its coefficient is negative it opens down. if y is squared , the parabola opens right and also if its coefficient is negative it opens left. however in order to do the above analysis our equation must be in standard form .
our parabola is
which is not standard form of any parabola . hence we square on both hand side and convert it into standard form.
hence we see that x is squared and its coefficient is non negative . there for it opens up.