Answer:
(1/2, 5)
Step-by-step explanation:
8x + 7y = 39
-2(4x - 14y = -68)
-8x + 28y = 136
add the two equations together
35y = 175
y = 5
8x + 7(5) = 39
8x = 4
x = 1/2
A
y is -6 = y-6
x=2 so =x+2
slope is -3/4
Supplementary angles
x+30°=180°{ straight angle}
x=180-30
x=150°
