Here's the question you clicked on:
Haileesss
find the vertex of y=x^2+16x+64
Use the equation to find the axis of symmetry. \[x=\frac{ -b }{ 2a }\]
i would do 1st derivative test
Once you've done that, substitute the x-value into the equation to find y.
okayyyy thanks guysss
Yeah 1st derivative test to find the vertex. very smart....not. I don't think a question like this would require such thing.
isnt the vertex just where the graph goes from increasing to decreasing.... or decreasing to increasing?
so ye its minimum or maximum
@Goten77 Stop waffling around.
All you need for this question is finding the axis of symmetry and then subbing that value into the equation to find y.
You're overcomplicating a simple question.
either way takes a short time... but if he showed his teacher the calculus way... ied give him extra credit XDDDDDDDDDDD