Ab20600
24.06.2019 •
Mathematics
Apoint that is 7 units from the y-axis is reflected across the y-axis. what is the distance of this new point from the y-axis? explain how you know.
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Ответ:
7 units
Step-by-step explanation:
When you reflect a point (x, y) across the y-axis, the y-coordinate remains the same, but the x-coordinate gets the opposite sign: it becomes (-x, y).
Thus, if a point A, say, (-7, 5) is seven units to the left of the y-axis, its reflection A' will be the same distance to the right, at (7,5).
In the image below, Point A is seven units to the left of the y-axis. Its reflection, Point A', is seven units to the right of the axis.
Ответ: