How do I graph this? f(x)=2(x-1)squared-3

Question

anonymous · Answer

I don't even know where to start!

anonymous · Answer

http://www.wolframalpha.com/input/?i=+f%28x%29%3D2%28x-1%29squared-3

anonymous · Answer

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anonymous · Answer

Thank-you! But I also need to understand how to get there. What steps do I use?

anonymous · Answer

You have to find the vertex first, I think that's the easiest way. The graphing form of a parabola is y=a(x-h)^2 + k. The vertex is (h,k). So, your vertex would be (1,-3) becuase you take the opposite of what ever is in the ( ). But, you also have to factor in your a, which is your stretch factor. I think it's easier to put in in your calculator and get the coordinates off of the table.

anonymous · Answer

Oh, and the -3 moves the graph down 3.