Which statement best describes the domain and range of f(x) = –(7)x and g(x) = 7x?

First of all, A function from a set to a set is a relation that assigns to each element in the set exactly one element in the set [/tex]B[/tex]. The set  is the domain (or set of inputs) of the function and the set contains the range (or set of outputs).

First.



The graph of this equation is shown in Figure 1. As you can see this is a straight line with negative slope and does not intersect the y-axis.

So the statement that best describes this problem is:

Both the domain and the range is the set of all real numbers.

Second 



The graph of this equation is shown in Figure 2.This is also a straight line but it has positive slope. This one does not intersect the y-axis either.

So the statement that best describes this problem is:

Both the domain and the range is the set of all real numbers.

The percent increase is 25%