Question

Identify the vertex for the graph of y = 3x2 + 12x + 5.

(2, 41)

(2, 35)

(−2, −31)

(−2, −7)
I got the third one

Answer 1

i think if you replace x by -2 you do not get -31

Answer 2

To find vertex in any general quadratic first put dy/dx=0 in this case 6x+12=0, x=-2,
To get y coordinate substitue x in the equation here you get y=-7

Answer 3

Is the answer really (-2,-13) I just re did it

Answer 4

\[3(-2)^2+12(-2)+5\] is what you n eed

Answer 5

\[12-24+5\]
\[-12+5\]
\[-7\]

Answer 6

oh so its (-2,-7)

Answer 7

ty