Question

find the vertex:

Answer 1

\[x=2y^2-4y=1\]

Answer 2

x=2y^2-4y+1*

Answer 3

2 ways of doing this
1) use completing the square to get it in vertex form

2) use shortcut formula, y = -b/2a where a,b,c refer to the coefficients

Answer 4

I wasn't sure if I was allowed to work it the same way as I solved for y.

Answer 5

hmm you don't need to solve for y, just get the vertex

a = 2
b=-4
c=1

y = 4/4 = 1
plug that in to get x_coordinate

Answer 6

So it should work out to V(1,-1)?

Answer 7

other way around, (x,y) --> (-1,1)
:)

Answer 8

Oh, good point
Thank you!