Answer:
y=1/2x+8
Step-by-step explanation:
-4=1/2*8+b
-4=4+b
b=4+4
b=8
Answer is -8
(-1)+(-7) turns into (1)+(7)=8 and then back to original which will be -8
Answer:
The answer is C because it is the only one without a straight line.
Step-by-step explanation:
40 is the correct answer for this
Answer:
6
Step-by-step explanation: You can set up the equation: 
= 
You square both sides to cancel out the squares which leaves you with 
= n - 4. Then you just solve as normal which ends you up with an answer of 6. You can check this by plugging 6 back into the equation and see that you end up with 
on both sides.
