A circle in the standard (x, y) coordinate plane has equation (x + 4)2 + (y - 3)2 = 49. What are the radius of the circle, in coordinate units, and the coordinates of the center of the circle?

80x^8−68x^6+16^5−20x^4−4x^3+8x^2

hope i'm right lol

guess at question:

a vertical line intersects the graph of g(x,y) = 0 at two points. what conclusion follows about the function f(x) implicitly defined by g(x,f(x)) = 0?

the domain of f(x) cannot include the x coordinate of any such vertical line.

informally, f(x) is not a function, and

g(x,y)=0 cannot be solved for y uniquely.

the relation r = {(x,y) such that g(x,y) = 0} is a function if

for all (a,b) ∊ r and (c,d) ∊ r, a=c implies b=d.

step-by-step explanation: