Question 1 Determine whether a relation is a function, as well as its domain and range:
a. Which of the following relations are functions?
1. y= -x+3
2. x=y+3
3. x-y=3
A. None of them
B. All of them
C. Choice 2 only
D. Choice 3 only
b. Find the range for f(x)=x^2+1, for x>0.
A. y>1
B. y≥1
C. y<1
D. y≤1
^& not sure on this, but it's A or B?
c. Find the domain for f(x)=(x-3)/(x-2)
A. x≠ -3
B. x ≠ 2
C. x ≠ -3, -2
D. x ≠ -2
^this one is B, right? that's what I got.
d. Find the range of the function: f(x)=x+2, for x≠1.
A. All real numbers
B. y≠1
C. y≠2
D. y≠3
^this one is D, right? I got this too.