Question 193376
<font face="Garamond" size="+2">


You have to share the specific problems if you want specific help.  But in general, if x is the squared variable, the parabola opens either up or down (up if a is positive, down if negative).  If y is the squared variable, it opens right or left (right if a is positive, left if a is negative).



John
*[tex \LARGE e^{i\pi} + 1 = 0]
</font>