Question: The equation a + y-4x+2y=b describes a circle. Part A Determine the y-coordinate of the center of the circle. The y coordinate of the

The equation a + y-4x+2y=b describes a circle. Part A Determine the y-coordinate of the center of the circle. The y coordinate of the center is Part B The radius of the circle is 7 units. What is the value of & in the equation? The value of b is

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