Question

The question that follows this graph is:

Which of the following sets of points would be the result of a 180° rotation of SM?


S’(5,1), M’(1,3)

S’(1,5), M’(3,1)

S’(-5,-1), M’(-1,-3)

S’(5,-1), M’(1,-3)

Answer 1

S'(5,-1), M'(1,-3)

Explanation:

So, if the rotation is clockwise, the formula is (x,y)--->(-x,-y).

The original points are, (-1,3) and (-5,1).

Using the formula,

(-1,3) ----> (1,-3)

(-5,1) ----> (5,-1)

For the question in the image, the reflection over the x-axis is..

S'(-5,1) ---> (-5,-1)

M'(1,-3) ---> (-1,-3)