Question

The equation of a parabola is (y−1)2=16(x+3) .

What is the equation of the directrix of the parabola?



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Answer 1

x=-7

Explanation:

Answer 2

x = -7

Explanation:

Since the equation for a directrix of a parabola that opens horizontally is x = h-p, we can plug it in. So h = -3 and p = 4. So x = -3-4 or x = -7.