Answer:
40°
Step-by-step explanation:
z+90+y+x=180°
z+90+30+40=180°
z=40°
Substract 2/3 from each side.
X= 2/3, assuming that you are solving for X.
Check the picture below.
the first one
y= -1/6x
Slope Intercept Formula
y=mx+b
-2= -1/6(12) +b
-2= -2+b
b= 0