exam Maths Puzzle Numerical Ability

an ellipse has verticies at (0, +- 20) and foci at (0,+- 16) find the equation of the ellipse in standard form.

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exam Other Question

which equation describes the line with an undefined slope and containing the point (-3,-1)?

A) x=-3
B) y=-1
C) y=-3
D) y=-3x-1
E) x=-1 Rewrite each equation as a function of x.
-3x+4y+11

McGraw Hill 6th edtion, chapter 7.5 exercise #18
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