Question

On a coordinate plane, each point on ST is defined by coordinates (x,y). The segmentis rotated 90° counterclockwise to create S'T'. Which of the following defines a pointon S'T' that corresponds to a point on ST.

Answer 1

The coordinates of S'T' are (-y,x)

Here, we want to get the result of rotating a point 90 degrees counterclockwisely

What we have here is that we will have a change in the coordinates of the point as follows;

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