Two circles are concentric if they have the same center.
Which equation represents a circle that is concentric with
the circle shown but has a radius that is twice as large?
O (X - 4)2 + - 6) = 4
O (X - 4)2 + UB)2 = 16
O (X - 6)2 + (y - 4)2 = 16
O (X-6)2 + (y – 4)2 = 4

12. decide whether each statement is always true, sometimes true, or never true. a. when corresponding points of an original figure and its reflection are connected, the resulting segments are all perpendicular to the line of reflection. b. when a point is reflected over a horizontal line, the y-coordinate of the point stays the same. answer both questions and explain

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The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left