Question

What are the foci of the ellipse given by the equation 100x2 + 64y2 = 64,000?
a. (0, ±6)
b. (±6, 0)
c. (0, ±36)
d. (±36, 0)

Answer 1

Divide by 64,000 to put it in Standard Form and it should be more obvious.

Answer 2

I got (0,+-6)

Answer 3

Awesome. Too bad I have no idea how you managed that. What was your process?

Answer 4

Honestly I dont know used a ellipse calculator

Answer 5

Really? Will that be availble on your exam?

Would you like to learn it?

Answer 6

Yes Id like to know how to get the answer without the calculator

Answer 7

Okay, put it in Standarad Form. Divide by 64,000. What do you get?