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The focus of a parabola opening upwards is at the point (-1,7). The point (11,12) is...

The focus of a parabola opening upwards is at the point (-1,7). The point (11,12) is on the graph of the parabola.

a) What is the directrix of this parabola?

b) What is the vertex of this parabola?

c) Write the equation of this parabola.

Math   Precalculus   
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