A group of friends share 32 cookies.
1 answer:
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The correct option is: (B) x2=−4(y−1)
Explanation:
The distance between (x,y) and the focus point is:
(Distance formula)
Plug in the values; the expression becomes:
The distance between (x,y) and the directrix y = 2:
In parabola both distances are equal; therefore
=
Take square on both sides:
Hence the correct option is: (B) x2=−4(y−1)
Explanation:
The distance between (x,y) and the focus point is:
Plug in the values; the expression becomes:
The distance between (x,y) and the directrix y = 2:
In parabola both distances are equal; therefore
Take square on both sides:
Hence the correct option is: (B) x2=−4(y−1)