Question

Square BCDE with vertices B(-6, 4), C(-2, 3), D(-3, -1) and E(-7, 0) is reflected over the y-axis. What are the new coordinates?

Answer 1

Answers:

B ' (6, 4)

C ' (2, 3)

D ' (3, -1)

E ' (7, 0)

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Step-by-step explanation:

The y-axis reflection rule is:

`(\text{x},\text{y})\to (-\text{x},\text{y})`

The x coordinate flips from positive to negative, or vice versa. The y coordinate stays the same.

So for example, the point B(-6,4) moves to B ' (6, 4).

You can use a graphing tool like GeoGebra to confirm the answers are correct.