Question

Figure ABCD is a rhombus with point A (3,-1) what rule would rotate the figure 270 counterclockwise

Answer 1

(x,y)-->(y,-x) should be the answer 

Answer 2

Answer: $(a,b)\rightarrow\ (-b, a)$ where (a,b) represents the coordinates for the pre-image and (-b,a) represents the coordinates for image.

Step-by-step explanation:

After rotating a figure  270° counterclockwise, then the x-coordinate interchanges with negative value of y-coordinate and y-coordinate interchanges with the value of -x coordinate.

The rule for rotating the figure 270° counterclockwise is given by :-

$(a,b)\rightarrow\ (-b, a)$

where (a,b) represents the coordinates for the pre-image and (-b,a) represents the coordinates for image.