## Haileesss Group Title find the vertex of y=x^2+16x+64 one year ago one year ago

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1. Azteck Group Title

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

2. Goten77 Group Title

i would do 1st derivative test

3. Azteck Group Title

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

4. Haileesss Group Title

okayyyy thanks guysss

5. Azteck Group Title

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

6. Goten77 Group Title

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

7. Goten77 Group Title

so ye its minimum or maximum

8. Azteck Group Title

@Goten77 Stop waffling around.

9. Azteck Group Title

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

10. Azteck Group Title

You're overcomplicating a simple question.

11. Goten77 Group Title

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