Which is the equation of an ellipse with directrices at y = ±4 and foci at (0, 2) and (0, −2)? x squared over 16 minus y squared over 4 equals 1 x squared over 4 plus y squared over 16 equals 1 x squared over 8 minus y squared over 4 equals 1 x squared over 4 plus y squared over 8 equals 1

x^2/4 + y^2/8 = 1

Step-by-step explanation:

true

step-by-step explanation:

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints