Why do people write fake answers that just restate the question, get the points for answering, then the moderation team does nothing about it. i never get any of my questions this site is just disappointing. bunch of college kids answering middle school math problems.

I think because there seem to be thousands of answers a minute, there is no way to keep track of all of them, considering this probably happening to hundreds of others at the same time, but yeah, I agree. It seems like a big mistake.

I feel your pain, it's either hit or miss with this site. Sometimes it can be useful or other times not.

Step-by-step explanation:

A positive parabola is one that has a + sign out front or no sign at all (and the positive is understood).  A positive parabola opens like a cup with a bottom.  Therefore, the positive parabola has a min value.  A negative parabola opens upside down, like a mountain with a peak.  Therefore, the negative parabola has a max value.