1. Which sets of ordered pairs represent functions? A.(-1,3) (-1,5) (0,0) (1,-5) (1,-5)
B.(-7,1) (-7,2) (-7,3) (-7,4) (-7,5)
C.(1,2) (2,2) (3,2) (4,2) (5,2)
D.(0,0) (1,1) (2,8) (3,27) (4,65)

(6,1)(5,4)slope = (4 - 1) / (5 - 6) = 3/-1 = -3y = mx + bslope(m) = -3use either of ur , = 6 and y = 1now sub and find b, the y int1 = -3(6) + b1 = -18 + b1 + 18 = b19 = bso ur equation is : y = -3x + we need it in standard formy = -3x + 3x to both sides3x + y = 19 < == standard form

I'm a bit puzzled here because they did not provide you with any measures of the other angles, so i am unable to provide a theorem or postulate to support my answer, but i'd say 90 degrees because it looks closer to a right angle than anything.

Ithink the answer will be 5