Question

4x2 + 9y2 = 72

x - y2 = -1

Select all of the following that are solutions to the system shown.
(3, 2)
(3, -2)
(-3, 2)
(-3, -2)

Answer 1

Ok, I would use substitution for this one. Do you know how to start that?

Answer 2

so you have the "x" and the "y" terms squared
if they're both POSITIVE, is an ellipse, or a circle which is really just a "round ellipse"
if they're both NEGATIVE, is a hyperbola

they're both POSITIVE, thus is an ellipse

Answer 3

well, I take that back,
IF ONLY ONE OF THEM IS NEGATIVE, then is a hyperbola :)

Answer 4

i got (3, 2) and (3, -2)...is that right??

Answer 5

ohh, wait.. is a system of equations, my bad heheh

Answer 6

thought they were asking for the center pfft

Answer 7

x - y2 = -1
-y2=-x - 1
y^2= x+1

Answer 8

(3, 2) 4=4 good
(3, -2) 4=4 good
(-3, 2) 4=-2 no
(-3, -2) 4=-2 no

a and b

Answer 9

thank you (: