Question

What transformation is represented by the rule (x, y)→(−y, x)?

A. reflection across the x axis

B. rotation of 90 degrees clockwise about the origin

C. reflection across the y axis

D. rotation of 180 degrees about the origin

Answer 1

The answer is D, an 180 rotation about the origin

Explanation:

I just did the test and got it right :)

Answer 2

C. reflection of the y axis, the y turned from a positive to a negative y while x is still the same


Hope I helped you:)