Algebra 2
posted by Jon .
1)Write an equation for the parabola with focus (4,0) and directrix y=2
4c(y  k) = (x  h)^2
4(1)(y  1) = (x  4)^2
4y + 4 = (x  4)^2
4y = (x  4)^2  4
y = (1/4)(x  4)^2 + 1
2)Write an equation for the ellipse with end points of the major axis at (7,1) and (7,1) and end points of the
minor axis at (0,5) and (0,3).
Major axis is 2a.
2a = 14
a = 7
Minor axis is 2b.
2b = 8
b = 4
(1/7^2)(x  0)^2 + (1/4^2)(y  1)^2 = 1
(1/49)x^2 + (1/16)(y  1)^2 = 1
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