Which set of values is a function? a.)(9,5), (10,5), (9,-5),(10,-5)
b.)(3,4), (4,-3),(7,4),(3,8)
c.)(6,-5) (7,-3), (8,-1), (9,1)
d.)(2, -2), (5,9), (5,-7), (1,4)

The answer is C
I hope this helps:)

In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct