Step-by-step explanation:

point 1 ( -7,y)
point 2 (1,13)




y = 7
The x intercept represents the maximum number of books he can buy
Answer:
y = x + 1 which is marked by the broken line
Answer:
14
Step-by-step explanation:
12:6=2
12+2=14
so her brother it's 14 years old
Answer:
51
Step-by-step explanation:
big windows 48
small windows 12
broken windnows9
unbroken windows= 48+12-9= 51
unbroken 51 windows