How many solutions does this system have?
x-2y=2
y=-2x+5

Base from the given system of equation, there would be only one possible solution. This is the point where the lines meet or intersect with each other. Hope this answers the question. Have a nice day. Feel free to ask more question.

X^2 - 4x +(4/2^2) + y^2 + 8y + (8/2^2) = -4 + (4/2^2) + (8/2^2)(x + 2)^2 + (y + 4)^2 = -4 + 4 + 16your center is (-2, -4) and the radius is the sqrt of -4 + 4 + 16 which is 4