9.2+day+2+due+5-6

done by parker tennet i got the same thing. good job. checked by rachel west 2. x^2 + 4y^2 = 16 (x^2/16) + (y^2/4) = 1 a = 4 b = 2 a^2 - b^2 = c^2 16-4 = 12 sqr 12 = 2sqr 3 c = 2 sqr 3 vertices : ( + or - 4, 0) and ( 0, + or - 2) e = c/a e = 2sqr 3 / 4 = (sqr 3 ) /2 4. I was supposed to check, but it wasn't put up. Done by Jennifer Hassell
 * 1) 2 Done by Alex Dubois, sorry for the late post, my scanner apparently broke so i finally decided to just post atleast all the work I agree with alex. I don't want to post my graph and embarass myself.Checked by Quinn Taylor.

Done By Aggie TutiaThis is what I got / Clarissa Rodriguez6. Done by Ellen Barth I agree -checked by Blake Schreiber

7. a= 2 b=1 on y-axis= vertical __x^2__ + __y^2__ = 1 1 4

done by Brooke wiggins

I got the same thing Checked By: Michael MacCrory

8) Done By: Courtney Venable

done by Mady Smith

I got the same answer -Michael doneHerzberg

10) b=3 c=4 a^2-b^2=c^2 a^2=c^2+b^2 a^2=9+16 a^2=25 a=5 x^2/25+y^2/9=1 done by Peter Radecki

11. I was supposed to check but it wasn't worked, so here it is

done by joon baek

13. Sorry I'm a little bit late, but I think that the answer is TRUE because an ellipse is kind of like a squished circle and if you have the same radius as an ellipse but in a circle the top would be un-squished and you would end up with more area.

for the area of a circle is pi(r)^2 and a circle is an ellipse just with equal major and minor axis, the formula for the ellipse pi(a)(b) is equivalent to the formula for the area of the circle, so they are equal because they both have a radius of 4. Done By: Kelsey Harmon
 * 13** i was supposed to check this one, but i think the answer is **FALSE**, because the formula

14)x^2/k+y^2/(4+k)=1 a^2-b^2=c^2 a^2=4+k b^2=k 4+k-k=c^2 4=c^2 c=2 it has the same foci because the k's always cancel out so it is 2 done by Peter the Panda Radecki

I agree with Peter- Valerie Finstad