Answer:
see explanation
Step-by-step explanation:
Under a clockwise rotation about the origin of 90°
a point (x , y) → (y , - x)
Answer:

Step-by-step explanation:
I have answered ur question
Answer:
it is a direct variation because k is proportionally constant
Step-by-step explanation:
direct variation is y=k.x
inverse variation is k=y.x or y=k/x
6/9 = 2/3
8/12=2/3
12/18=2/3
20/30=2/3
i even add a graph for you