If y = C + Z, y is the positive proportion function of X + 2, Z is the inverse proportion function of X, and x = 1, y = 1, find the relationship between Y and X

If y = C + Z, y is the positive proportion function of X + 2, Z is the inverse proportion function of X, and x = 1, y = 1, find the relationship between Y and X

Y is a positive proportional function of X + 2
y=k(x+2)
x=1,y=1
1=k(1+2)=3k
k=1/3
y=(x+2)/3