Please help with all of these really really appreciate it please hurry please thank you

Answer:
5) https://imgur.com/WXtRJkj
6) https://imgur.com/USaH7PO
7) y = x
Step-by-step explanation:
(1,1) and (5,5)
m= (y2-y1)/(x2-x1)
m= (5-1)/(5-1)
m= 4/4
m=1
y - y1= m(x - x1)
y -1= 1(x -1)
y-1= x - 1
y = x