Answer:
83
Step-by-step explanation:
The total angle of a flat line is 180. If you subtract the angle of 2 from 180 you get 83 which is the angle of 1.
12.75
PROOF:
find all the m's first
3m+3m+m+m=8m
8m=102
Divide both sides, and you get
12.75
Two straight lines perpendicular to each other, the slope of which is negative reciprocal.
y=-4/3x+b
The known points are put into the linear equation
y=-4+b
b=13
y=-4/3x+13
Where is 'the following'?
(I'll Answer in comments just give detail)