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# CBSE Class 11-science Answered

Find the equation of the parabola whose focus is (4,0) and the directix x = -4.

Asked by Topperlearning User | 30 Apr, 2014, 11:27: AM Expert Answer

The focus (4,0) lies on the x axis, the axis of the parabola is the x axis. The equation of the parabola is either y2 = 4ax or y2 = -4ax. Since the directix is x = -4, the parabola is of the form y2 = 4ax, where a = 4. Equation of the parabola is y2 = 16x

y2 = 16x.

Answered by | 30 Apr, 2014, 01:27: PM

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