Question

Triangle ABC is shown on the graph. What are the coordinates of the image of point B after the triangle is rotated 270° about the origin?

Answer 1

Since we do not have the graph so it would be difficult to answer this question.

But here is an example which can help you understand it.

formula to calculate a 270° about the origin rotation:

(x, y) → (y, -x)

So if we look at this equation this means we will reserve the order of x and y and will negate the original value of x - value.

After rotating the point (3, -5) 270º, it will become (-5, -3) since we reverse 3 and -5, then make 3 negative.

After rotating the point (-6, -7) 270º, it will become (-7, 6) since we reverse -6 and -7, then make the -6 positive.

If there is any confusion please leave a comment below.