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Can you explain the vertex steps in more detail because I haven't done any work on it yet.

Hi. I'm just wondering how do you graph a formula (with axis and vertex) with the full equation of y = ax^2 + bx + c. I've got a question here. y = -x^2 + x +2 If someone could graph it and tell me how they did it step by step, I'd really appreciate it.

Thanks. Perfectly explained.

Can you answer one of the questions because I still don't really understand.

Thanks but what exactly is "locus?"

We haven't studied this at school yet, so could anyone explain this to me? I've got a couple of questions on it. In a triangle APB, the side AB remains fixed and the vertex P moves in a place, what is the locus of P if angle APB remains the same size? In a triangle APB, angle APB is a...

28. A, B, C are three points on a circle and triangle ABC is acute-angled. AD is drawn parallel to BC and CD is drawn parallal to BA. Prove that D cannot lie on the circle. (D is the point of intersection of the two parallels) I haven't done any work on disproving a point. Do you use cyclic...

Sorry guys. I'm really struggling with these ones. This one looks deceptively simple yet I can't solve it. I have inserted the diagram into a word document. If anyone could help me, I'd greatly appreciate it.

Thank you very much. I get it now. On a similar note, how many things do you need to prove to make 2 lines parallel (for example, in this diagram, is that 1 pair of co-interior angles adequate enough to say they are parallel?)p

How can you prove AE is parallel to OB

Sorry guys, there are too many different things going on and I still don't understand the solution.

Hi. This is my first post here although I've been reading many posts before. I need some help on this question. I mainly need a diagram because I don't get what the question is trying depict. If you can, leave the answer and working out out, but include a diagram. Cheers. 22. Two points A...