Answer:
y=1/3x+5/3
Step-by-step explanation:
y=1/3x+b
1=1/3(-2)+b (plug in ya points)
1=-2/3+b
5/3=b
y=1/3x+5/3
So first, you get the absolute value to one side:

Next, set up two equations; One where the value inside the absolute value lines is positive, and another where it is negative, and solve both for the variable:

Your answers are
8 and -8, or +-8.
3180 because you divide 31800 by 10
A/3=7/10
21=10a
a=2.1
100a=100*2.1=210
Answer:
16
Step-by-step explanation:
4+4=8
8+8=16