For 6 points, answering 5 questions is a rip-off.
However, I shall answer 7.
haha sike get noob
Answer:
Step-by-step explanation:

Combine like terms. 1/4 and 7/8 are like terms and LCD of 4 and 8 is 8
9/10y and -3/5y are like terms and LCD of 10 , 5 is 10

Answer:
E ( 1 , -1 ) is in quadrant IV
Answer:
-3
Step-by-step explanation:
6x - 4 = -22 6x = -18 x = -3