Answer:
1. 7
2. 17/12 can be a mixed number
Answer:
1) Answer: 3) 
2) Answer: 3) 2 and -6
Step-by-step explanation:
1)



Answer: 
2)





or 
or 
Answer: x = 2 or x = -6
Answer:
(7,4)
Step-by-step explanation:
midpoint formula (x1+x2)/2 , (y1+y2)/2
Look at x and y for the endpoints separately
midpoint x value = ( 1 + x)/2
4= (1 + x)/2
8 = 1 + x
x = 7
midpoint y value = (2 + y)/2
3 = (2 + y)/2
6 = 2 + y
y = 4
endpoint (x,y) = (7,4)
Im so sorry i need points but