Answer:
y=3
Step-by-step explanation:
y + 3 = - y + 9
y + y = 9 - 3
2y = 6
y = 6/2
y =3
No
There isn't a slope so I'm guessing it's not a function
conjecture
in figure 1 the value of X is 20° and figure 2 the value of X is 19° and y is 123°