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Given a parabola with the vertex at the origin and the directrix at x=7 determine the direction the parabola opens. A. down B. left C. right D. up

Given a parabola with the vertex at the origin and the directrix at x=7 determine the direction the parabola opens. A. down B. left C. right D. up
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2 votes
Given a parabola with the vertex at the origin and the directrix at x=7 determine the direction the parabola opens. A. down B. left C. right D. up

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User Rick Stanley
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7.7k points

2 Answers

4 votes
i think the answer is b but im not sure
answered
User Pwnstar
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7.1k points
4 votes
It will open to the left

because the directrix is a vertical line through x=7 and the focus will be on negative side of the x axis
answered
User JimJty
by
8.4k points
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