Question

Find the vertex of the parabola formed by the following quadratic function: y=2x^2=8x+2 a.)(-4,66) b.)(4,2) c.)(-2,26) d.)(2,6)

Answer 1

using algebra or calculus?

Answer 2

algebra

Answer 3

okay so basically we have formula that comes form the quadratic equation

Answer 4

it says:

the x coordinate of the vertex = -b/2a

Answer 5

do you know what the vertex is?

Answer 6

No, that's the problem

Answer 7

hehe its okay its actually really easy once someone explains it

Answer 8

so basically this part

"y=2x^2=8x+2"

is a function. If we punch in numbers (x's), it punches out different numbers (y's).

Answer 9

and when we put those numbers on an x y graph it looks like this

Answer 10

correction:
y=2x^2+8x+2

Answer 11

this one is a happy face.. its vertex is the point all the way at the bottom