This is also driving my crazy. I'm asked to write in standard form of the quadratic function. It gives me a picture of a parabola and 3 points, 1 of them is the vertex.
Here's an example:
I don't get it at all.
Ok I'm not trying to hijack this post but got a quick question.
Using Sum and Product of the roots you can get the equation but how would you know which is correct without using the graph
Sum = 0
Product = -1
so
$\displaystyle x^2 -1$ which is incorrect
or
$\displaystyle x^2 + 1$ which is correct
oops lol thanks. Otherwise I have imaginary numbers. Forgot to put the negative infront of x^2 so the graph opens downward. But skeeter how would I know that $\displaystyle -x^2 +1$ is the graph and not $\displaystyle x^2 -1$ just using the formula $\displaystyle x^2 - Sx + P$