Question

9x^2+y^2=9
y=9x^2+3

Answer 1

the second equation gives you y = (something )

so wherever there is a y in the fist equation substitute the (something) from the second...

Answer 2

even though its y^2 in the first one?

Answer 3

yeah - but you need to square the y value from the second.

It is going to lead to a complicated equation in x....

Answer 4

y^2 = (9x^2+3)^2

Answer 5

are you sure you typed the question correctly?

Answer 6

yes i did beside the second problem is suppose to be -9

Answer 7

i did what you said and i got 81x^4+63x^2+9=9

Answer 8

OK - I didn't do it but it looks about right

there is a factor of 3 you can remove...

Answer 9

should i do this or no