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1. Changing the value of m in cell W4 affects the values in the Y column of the table. Describe the relationship between the X and Y values:
   when m = 1
   when m = 2
   when m = -4
   

2. As the value of m changes, there is also an effect on the graph. Describe the direction and steepness of the line:
   when m is small
   when m is large
   when m is negative
   

3. What command in cell Y1 would produce a graph with a slope of 5?

4. What equation produces a graph that is the reflection of the graph of y = 3x in the x-axis?

5. The point where the graph of a function meets the y axis is called the y-intercept. What is the y-intercept of each of the following:
   y = 3x
   y = 5x
   y = -6x
   

6. Why is the y-intercept of functions of the form y = mx always 0?