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OpenStudy (anonymous):
What is the equation of the parabola with vertex (2, 4) and focus (5, 4)?
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OpenStudy (campbell_st):
well look at the points on the number plane |dw:1363718426581:dw| the parabola is concave right. So its in the form \[(y - k)^2 = 4a(x - h)\] the vertex is (h, k) and the focal length a is shown in the diagram substitute and evaluate to find the equation.
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