To reflect a point across the y-axis, we need to change the sign of its x-coordinate while keeping the y-coordinate the same.
Endpoint (1,1) will be reflected as (-1,1).
Endpoint (4,4) will be reflected as (-4,4).
a line segment has endpoints (1,1) and (4,4). Demonstrating the properties of reflections across the y-axis, what are the reflected endpoints?
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