This will be the graph of your equation. hope it helps
Use the formula y2-y1:x2-x1
Y2= 8
Y1=-4
X2=4
X1=-12
8-4=4
4-12=-8
Slope is 4/-8 or -1/2
Angles a, b, and c are all 60°. A triangle’s angles add up to 180, and if the triangle is equilateral, each angle must be 60 (180/3). Angle d is 120° because b and d form a supplementary angle (180°), so 180-60 is 120. Angle e and f and 30°. Angles c and e form complementary angles (90°), so 90-60=30. For f, if the triangle adds up to 180, 180-120-30 = f. The 120 comes from d and the 30 comes from e. This leaves f as 30.