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for the equation -4x-8y^2=0,give the focus and directrix.then sketch the graph, showing both the focus and the directrix. pleas...Asked by lisa
for the equation -4x-8y^2=0,give the focus and directrix.then sketch the graph, showing both the focus and the directrix. please show all the step thank you.
Answers
Answered by
Steve
you know that for
y^2 = 4px
the focus is at (p,0)
the directrix is at y = -p
y^2 = 4px
the focus is at (p,0)
the directrix is at y = -p