Which figure correctly demonstrates using a straight line to determine that the graphed equation is not a function of x? On a coordinate plane, a circle is centered around (0, 0). A vertical line touches the edge of the circle at (negative 4, 0). On a coordinate plane, a circle is centered around (0, 0). A horizontal line touches the edge of the circle at (0, 4). On a coordinate plane, a circle is centered around (0, 0). A vertical line goes through 2 points of the circle On a coordinate plane, a circle is centered around (0, 0). A horizontal line goes through 2 points of the circle