Question

How many solutions does the following system of equations have?
x=-2
x^2+y^2=4

Answer 1

one....

Answer 2

noo... wait... two

Answer 3

care to give some sort of proof?

Answer 4

wait... okay so the second equation is circle.. with it's center at (0,0) aka the origin

Answer 5

and a radius of 2....

Answer 6

meaning it'll hit x=-2 only once...

Answer 7

and in the first equation x can only equal -2

Answer 8

so the answer is one.

Answer 9

correct :) so there is only 1 solution

Answer 10

:)

Answer 11

ooo thank you guys!