What is the algebraic rule for a figure that is rotated 270° counterclockwise about the origin?
a. ro,–270°(x, y) → (–y, x)
b. ro,–270°(x, y) → (x, –y)
c. ro,270°(x, y) → (–x, –y)
d. ro,270°(x, y) → (y, –x)

Each quadrants' angle is 90 degrees. Rotating (x, y) -270 degrees would move it from quadrant I to quadrant IV. (x, y) = (+, +) = Quadrant I (-x, y) = (-, +) = Quadrant II (-x, -y) = (-, -) = Quadrant III (x, -y) = (+, -) = Quadrant IV Hope this helps. :)