Find the focus and directrix of the parabola , and sketch its graph.
The focus and directrix of the parabola , and sketch the graph.
The equation of the parabola is .
Compare the given equation of parabola with .
By comparing the given equation of parabola with , we get
Since is negative, so the given parabola is downward parabola and the focus will lie units down to the vertex and directrix will be units upward a straight line parallel to the -axis
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