Question

PLEASE HELP ME!! PLEASE!

What affect does the "h" value have on the function f(x) = log(x)?
The "h" value moves the graph left or right.
The "h" value moves the graph up or down.
The "h" stretches the graph vertically by a factor of |h|.
The "h" value reflects the graph across the x-axis.

What is the domain of f(x) = log(x + 3) + 1?
x > 1
x > 3
All Real Numbers
x > -3

The domain of f(x) = log(x + 2) is x > 2.
TRUE
FALSE

What is the domain of f(x) = log(x)?
All Real Numbers
x > 0
x < 0
x > 1

What is the domain of f(x) = log(x) - 1?
All Real Numbers
x ≥ 0
x > 0
x < 0

Answer 1

1. There is no "h" in f(x) = log(x). The question is nonsense.

2. The log function is defined for arguments greater than zero. You're probably expected to select D, though A and B could also be correct.

3. Same deal. The log function is defined for x > -2, but the domain could be restricted to x > 2. You're expected to select FALSE.

4. Same deal. Choose B, though D is also correct.

5. C is the proper choice. (See discussion of the log function, above.)