Derive the equation of the parabola with a focus at (−2, 4) and a directrix of y = 6. Put the equation in standard form. (2 points) A. f(x) = one fourth x2 − x + 4 B. f(x) = − one fourth x2 − x + 4 C. f(x) = one fourth x2 − x + 5 D. f(x) = − one fourth x2 − x + 5

The function y= x - 4x+ 5 approximates the height, y, of a bird, and its horizontal distance, x, as it flies from one fence post to another. all distances are in feet. complete the square to find and interpret the extreme value (vertex). select two answers: one extreme value and one interpretation.