Question

Identify the vertex and axis of symmetry.

Answer 1

y=-2

Answer 2

is x ^2 or ^3

Answer 3

Is it what?

Answer 4

nvm

Answer 5

Does anybody know the answer?

Answer 6

wait im trying xD

Answer 7

is there a 1 on your choices?

Answer 8

If you differentiate with respect to x, to get the function \[dy/dx = 2x-2\]
And let it = 0 to find the vetex you will get \[2x-2=0\] so 2x=2 , x = 1
Now we know the x co-ordinate to find the y co-ordinate substitute the x value into the original equation to get \[y= (1)^2-2(1)-1\]
y=-2
So the vertex is at (1,-2)
The axis of symmetry is the vertical line which passes through -2 which is x = -2

Sorry it took so long but started solving it the wrong way and realised only after finishing.

Answer 9

woo i got half of it :)

Answer 10

Yep u did get half of it.. Thanks guy's. :)

Answer 11

Thanks heat, and sorry it took so long but started completing the square and it just went horribly wrong :s

Answer 12

Haha i understand, but don't worry its cool.