Answer:
I think it is 6 cones
Step-by-step explanation:
21 ÷ 3.5 = 6
3 thats where all the negative x and y is located
The answer is
y^2-4x+4y-4=y^2+4y-4x-4=(y+2)²-4x - 8= 0
it is the same of x + 2 = (1/4 ) (y+2)²
the main formula is x-h= a (y-k)² so h=-2, k= - 2 and a=1/4
