Question

What is the domain of f(x) = log(x - 4) + 3?

Answer 1

our only concern is in the log( )

logs hate to be 0 and less

Answer 2

x-4 <= 0
+4 +4
-----------
x <= 4

Answer 3

might have done that a bit backwartds; thats the bad side of the domain :)

we want x-4 to be greater than 0

x-4 > 0
+4 +4
--------
x > 4

Answer 4

If y varies inversely as x, and y = 12 as x = 2, find y for the x-value of 6.


6

5

4

3

Answer 5

an inverse relationship is: xy = k

Answer 6

2(12) = 24

6(y) = 24