Dondra C.

asked • 01/26/23

What is the vertex of the graph of the function f(x) = x2 + 6x + 9?

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Mark M. answered • 01/26/23

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f(x) = (x + 3)2, vertex form


So, (3, 0)

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Peter R.

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Sorry, but it's (-3,0) (see graph) -b/2a = -6/2 = -3 for x coordinate of vertex.
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01/26/23

Brenda D.

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I agree with Peter R above. Also of note is that the function is given in Standard/General form of ax^2 + bx + c where a = 1, b= 6 and c = 9 and h, the x coordinate can be calculated directly like Peter R has shown above.
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01/27/23

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