Consider the equation $y=\frac{1}{2}x-4$. 

1. Without graphing, where is the $x$-intercept of $y=\frac{1}{2}x-4$.

   Hint (a):

   Set the equation equal to zero, since your output would be zero, and then solve for $x$.

2. On graph paper, make a table and graph $y=\frac{1}{2}x-4$.

3. Using your graph from part (b), how can you find the $x$-intercept of $y=\frac{1}{2}x-4$? How do you find it in the table? Explain.

   Hint (c):

   Find the point where $y=0$.

   Use the eTool below to help solve the problem.
   Click the link at right for the full version of the eTool: Int2 1-38 HW eTool