Answer:
30 degrees
Step-by-step explanation:
Let Angle ABC be 2x, Angle EBC be 5x

C is the closet to the real answer and its a estimate so, C
Y=mx+b where m=slope=(dy/dx) and b=y-intercept (value of y when x=0)
You have two points...(1,-2),(3,2) so
m=(y2-y1)/(x2-x1)=(2--2)/(3-1)
m=4/2=2 now that you have the slope...
y=2x+b, you can use either point to solve for the y-intercept, I'll use (3,2)
2=2(3)+b
2=6+b
b=-4 so the line is:
y=2x-4
Apperently someone deleted my question i was trying to see if you had understood what i was trying to help you on