Question

quadrilateral abcd is transformed according to the rule (x, y)→(y, -x). which is another way to state the transformation? r0,90° r0,180° r0,270° r0,360°

Explanation:

Step1: Recall rotation rules

The rule for a $90^{\circ}$ counter - clockwise rotation about the origin $(x,y)\to(-y,x)$. The rule for a $180^{\circ}$ rotation about the origin $(x,y)\to(-x,-y)$. The rule for a $270^{\circ}$ counter - clockwise rotation about the origin $(x,y)\to(y, - x)$. The rule for a $360^{\circ}$ rotation about the origin $(x,y)\to(x,y)$.

Answer:

C. $R_{0,270^{\circ}}$