Easy question ! But im bad! (1 Viewer)

[2xL]

Please find the focus of (x+2)^2 = 4 - 8y

Please show working, i dont understand!

 

[Shadowless]

( x - h ) ^ 2 = 4 a ( y - k ) , where (h,k) will be the vertex

thus:

( x - [ -2 ] ) ^ 2 = - 4 [ 2 ] ( y - [ 0.5] )

therefore your vertex will be: (-2,0.5)

as this is a concave down parabola, focus will be: (-2,0.5-2)

THEREFORE your focus will be: (-2,-1.5)

 

[2xL]

Ahh fuck ya kev LOL i did that wrong.