Which rule represents Ro, 180°?

(x, y) – (-y, x)
(x, y) – (-x, -y)
(x, y) - (y, -x)
(x, y) — (y, x)
The answer
(x, y) —(-x,-y)

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

Quadrilateral abcd is a parallelogram with diagonals that intersect at point e. which of the following statements is true?

Aline passes through the point (9,-7) and has a slope of 4/3 write an equation in point-slope form for this line. first to answer correctly gets brainleist