Is this equation lying in an XY-coordinate system? Apparently, not.
Is f(x) = y = x^2 +2qx+ r ?
Agree with intr3pid
it shud be y = x^2 +2qx+ r and the fn intersects x axis when y = 0
Lets say the question was:y = x^2 +2qx+ r, What are the points of intersection of this equation with X-axis.
What would be your answer?
I think it should be E, since we will never get to know the exact "values". We can only say whether the line cuts the x axis with A.
Correct. Unless you change the first condition to q^2<r, in which case there's no real solution, the line does not exist, and there's no intersection.
HOWEVER, and a major one at that, the question put forth is "what are the points
of intersection?" This means that, theoretically, we can answer this question from the first statement by providing a range of roots (be it in terms of q and r). I just don't know if that's what the question is asking.