Consider a circle whose equation is x2  +  y2  –  2x  –  8 = 0. which statements are true? check all that apply 1.the radius of the circle is 3 units. 2.the center of the circle lies on the x-axis. 3.the center of the circle lies on the y-axis. 4.the standard form of the equation is (x  –  1)² +  y²  = 3. 5.the radius of this circle is the same as the radius of the circle whose equation is x²  +  y²  = 9.