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JenniferSmart1
 2 years ago
how do I get the vertex of a parabola?
\[y=x^2+16x+64\]
JenniferSmart1
 2 years ago
how do I get the vertex of a parabola? \[y=x^2+16x+64\]

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CalebBeavers
 2 years ago
Best ResponseYou've already chosen the best response.1You could put it in vertex form by completing the square of the right side

JenniferSmart1
 2 years ago
Best ResponseYou've already chosen the best response.0I don't think we need to complete the square... \[y=(x+8)^2\]

CalebBeavers
 2 years ago
Best ResponseYou've already chosen the best response.1Yep thats it you noticed (16/2)^2 is 64 so you didnt have to do anything So the vertex is (8,0)

JenniferSmart1
 2 years ago
Best ResponseYou've already chosen the best response.0how do you know that that is the vertex? What's the formula for finding a vertex?

CalebBeavers
 2 years ago
Best ResponseYou've already chosen the best response.1Well when its in vertex form y=a(xh)^2+k (h,k) is the vertex in this case h is 8 and k is 0

JenniferSmart1
 2 years ago
Best ResponseYou've already chosen the best response.0Makes sense! Thanks!!!
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