Easy question ! But im bad! (1 Viewer)

2xL

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

Please show working, i dont understand! :(
 

Shadowless

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( 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

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Ahh fuck ya kev LOL i did that wrong.
 

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