Getting so tired of these but I need the practice and this is the last one so please help!
2x^2+y^2=33
x^2+y^2+2y=19

Question

Getting so tired of these but I need the practice and this is the last one so please help!
2x^2+y^2=33
x^2+y^2+2y=19

perl · Answer

Multiply the second equation by 2, then subtract the two equations. That will eliminate the x's

cutiecomittee123 · Answer

Oh lol yeah solve the system of equations and then tell what the coordinates are of the solution that lies in quadrant 3

cutiecomittee123 · Answer

wouldn't you multiply the second equation by -2?

cutiecomittee123 · Answer

@perl

freckles · Answer

I thought we did this one together

freckles · Answer

http://openstudy.com/users/cutiecomittee123#/updates/5571ea30e4b01d0053aba019

cutiecomittee123 · Answer

No they arent the same

freckles · Answer

they are exactly the same

cutiecomittee123 · Answer

But I have another thing to ask and I dont feel like opening another question so can someone help?
What conic section does this equation represent?
9x^2+4y^2+18x=16

freckles · Answer

how is this system 2x^2+y^2=33
x^2+y^2+2y=19
different from this system 2x^2+y^2=33
x^2+y^2+2y=19?

cutiecomittee123 · Answer

Maybe they are the same but I really need the practice and the question was different

freckles · Answer

no it wasn't

freckles · Answer

but I'm done arguing

perl · Answer

You can multiply the second equation by -2