Question

find the vertex of y=x^2+16x+64

Answer 1

Use the equation to find the axis of symmetry.
\[x=\frac{ -b }{ 2a }\]

Answer 2

i would do 1st derivative test

Answer 3

Once you've done that, substitute the x-value into the equation to find y.

Answer 4

okayyyy thanks guysss

Answer 5

Yeah 1st derivative test to find the vertex. very smart....not. I don't think a question like this would require such thing.

Answer 6

isnt the vertex just where the graph goes from increasing to decreasing.... or decreasing to increasing?

Answer 7

so ye its minimum or maximum

Answer 8

@Goten77 Stop waffling around.

Answer 9

All you need for this question is finding the axis of symmetry and then subbing that value into the equation to find y.

Answer 10

You're overcomplicating a simple question.

Answer 11

either way takes a short time... but if he showed his teacher the calculus way... ied give him extra credit XDDDDDDDDDDD