Solution

foci

Solution

Solution steps
Rewrite in the standard form:
Parabola is symmetric around the y-axis and so the focus lies a distance from the center along the y-axis
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Popular Examples

x^2+y^2+10x+12y+25=0vertices x^2=16ydirectrix y^2=-10xeccentricity (x^2)/(25)+(y^2)/(25)=1vertices f(x)=x^2-4

Frequently Asked Questions (FAQ)

  • What is the foci x^2=-4y ?

    The foci x^2=-4y is (0,-1)