State which of the following ordered pairs is a function. set a: (-1, 0), (-2, 1), (4, 3), (3, 4)set b: (1, 4), (2, 3), (3, 2), (4, 1)set c: (2, 1), (3, 2), (2, 3), (1, 4)a. set ab. set bc. both set a and set bd. set c

Me i've asked this question 3 time asapright triangle abc and its image, triangle a'b'c' are shown below. algebraically prove that a clockwise and counterclockwise rotation of 180o about the origin for triangle abc are equivalent rotations.