ASAP WILL GIVE CROWN PLS AAP Which of the following relations is not a function? A. {(9, - 7), (4, 1), (- 7, 9), (5, - 4), (7, 7)} B. {(7 , 4), (- 9, 1), (4, 0), (8, 1), (2, - 3)} C. {(12, 0), (- 1, - 3), (2, 5), (3, - 2), (- 1, 2)} D. {(- 2, 5), (- 3, - 8), (2, 5), (8, - 7), (1, 2)}

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

ok thats very interesting