Question

Find the vertex of the quadratic equation: y = 2x2 + 8x − 4.

(−2, 20)

(−2, −12)

(2, 20)

(−2, −28)

Answer 1

\[x=-\frac{b}{2a}\]
plug it in and see what you get for \(y\)

Answer 2

is it like slope?

Answer 3

no

Answer 4

a quadratic does not have a slope, a line has a slope
it is where the parabola "sits"
it is either the max or min
i will show a picture

Answer 5

a parabola?

Answer 6

http://www.wolframalpha.com/input/?i=y+%3D+2x^2+%2B+8x+%E2%88%92+4

Answer 7

yes a parabola

Answer 8

i dont understand :c

Answer 9

did you look at the picture i sent?

Answer 10

yeah

Answer 11

ugh the numbers are so large on the graph... ok um B?