Question 67145
All linear equations have a domain of all real numbers and a range of all real numbers.  Visualize a linear graph.  It is, in essence, a straight line.  Now think about this:  Is there any number that you could plug into x that would NOT produce a value for y?  The answer is no.  The graph of any linear equation goes on infinitely in both the positive and negative direction.  Likewise,  we can take any value for y we choose and find a value for x that will produce this value.  I hope this helps and not confuses.  The easiest way to find the domain and range of a function is to visualize the graph.