Question

Question:
Which description represents the transformation shown? The pre-image is shown in blue, and the image is shown in red.
Answers:
a- translation by rule (x + 9, y + 0)
b- rotation 180 degrees about the origin
c- reflection across the y-axis
d- dilation with factor 2

Answer 1

@funinabox can you help me

Answer 2

I believe the answer is B - it seems like it will be C, cause the image is flipped over the y-axis, but that is not the case actually.

the reasoning behind it being B is because the image is not flipped across the y-axis - it is actually turned about the point in the middle of the picture by 180 degrees. This causes all of the points on the blue image to reverse themselves (take point A, for instance, it was (-3, 1). On the red triangle, it becomes (-1, 3))

Answer 3

the answer is B idd