Compare and contrast the two quadratic equations below. In order to receive full credit, use complete sentences to describe the following:

The direction each parabola opens
The vertex of each parabola
y = x^2 − 2x
y = −2x^2 + 4x − 3
Just view it with me and tell me if I'm right.

Question

Compare and contrast the two quadratic equations below. In order to receive full credit, use complete sentences to describe the following:

The direction each parabola opens
The vertex of each parabola
y = x^2 − 2x
y = −2x^2 + 4x − 3
Just view it with me and tell me if I'm right.

anonymous · Answer

I don't know how to get the vertex, but I can kinda get the dir. of each parab.

anonymous · Answer

On the first one it opens upward and the second one it opens downward.

anonymous · Answer

How do I get the vertex of these 2. Could someone please explain...

anonymous · Answer

still there?

anonymous · Answer

you get the x coordinate of the vertex from -b/(2a) where a and b are the coefficients of the x^2 and x terms, respectively.

to get the y coordinate, just use that x value you found back into the the equation.