Write down the Cartesian equation of a parabola with vertex at the origin and the
focus at the point (0, −2).
Solution.
"(x-h)^2 = 4p(y-k)"
where "(h,k) - vertex", so in our case it is "(0,0)" and distance from vertex to focus is "p" = -2
Answer: "y = -1\/8 * x^2"
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