Question

quadratic functions: axis of symmetry and vertex formula
for this equation y= x^2 + 2 how do you find and graph the vertex? If you plug it into the formula, -b/2a, which is 0/2*1 you get x=0, but what about the y?

Answer 1

x=0 means symmetric by the y-axis

Answer 2

so it's exactly on the y axis??

Answer 3

\[f(x)=0^2+2=2\]

Answer 4

yes

Answer 5

but what about the point? how do you know what point it is on?

Answer 6

it's supposed to be 0,2

Answer 7

i already answered?

Answer 8

is that a formula?

Answer 9

I just put x=0 into a function

Answer 10

OOOOH!!!! so you just plugged in x for x^2+2?

Answer 11

i mean 0

Answer 12

yep!

Answer 13

sweet thanks!

Answer 14

you vetex(0,2)

Answer 15

this is an awesome site i just want to say. Before this, i would be struggling and watching so many videos and reading so many math sites just to figure out something like this