Give the coordinates of the point obtained from each reflection. (a) Reflect the point \( (9,7) \) across the \( x \)-axis: (D. \( \square) \) (b) Reflect the point \( (9,7) \) across the \( y \)-axis: (D. \( \square \)
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Reflecting in the Coordinate Plane Suppose that the $y$ -axis acts as a mirror that reflects each point to the right of it into a point to the left of it. (a) The point $(3,7)$ is reflected to what point? (b) The point $(a, b)$ is reflected to what point? (c) What point is reflected to $(-4,-1) ?$ (d) Triangle $A B C$ in the figure is reflected to triangle $A^{\prime} B^{\prime} C$. Find the coordinates of the points $A^{\prime}, B^{\prime},$ and $C^{\prime} .$
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