What graphing utility can I use to graph multiple 3d functions on one plot?

For example I want to plot x+y+2z=2 and z=x^2+y^2

Question

What graphing utility can I use to graph multiple 3d functions on one plot? 

For example I want to plot x+y+2z=2 and z=x^2+y^2

asnaseer · Answer

This is the closest thing I can get wolfram to do for you: http://www.wolframalpha.com/input/?i=plot+%7B%28x%2By-2%29%2F2%2C+x%5E2%2By%5E2%7D don't know if that is what you are looking for?

anonymous · Answer

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richyw · Answer

No what I am looking for is each of those plots on one graph, so I can see the intersection. I am actually trying to find the parametric equation of the curve generated from the intersection of those two functions, but I just wanted to know how to graph these things in general

anonymous · Answer

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