Arhwen,
so your prof asks questions to which more than 1 answer is correct?
That's a type of MultipleChoice I'm unfamiliar with, however it explains why passrates are higher whilst the standards are lower.
Also, your "is it a quadratic equation? or graphing/plotting (inequalities)?" is baffling... hun, that is exactly the same, in fact they both belong under "problem solving?"! However this is entry-level algebra, PM me when you get to trigonometry ;-)
If you think a problem may only have 'a' or 'z' then you're infinitely far from any finish line - fwiw, your Q & my A works for any real number, not integers only, and you may choose any letter or name/notation you like.
Bottom line here is, if I were you I'd question my professor, but maybe that's a subject for another thread. Here's a hint: if a Q has more than 1 possible answer then the Q is wrong! Oh, rest assured this (your!) Q only has 1 answer only, never mind endless haggling.
I said your Q can be represented as y=(x**2)-x (but substitute any letter for any other if you like them better)
Mind, that is the exact same as what Tizz wrote, it is a two-dimensional parabolic line.
I asked you what y will be when x=1 , and the answer is 0
I asked Yankee what y would be when x=-2 , and because he's proven there's no hope in hell he'll ever get there... it's 6 !
Back to sex, I think you missed something about my dick: ever given it a thought that one and the same dick can be 8" AND 2" - at the SAME time? Here's a hint, it will also measure
6.28" then ;-)