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1. Changing the value of b in cell W6 affects the values in the table. Describe the relationship between the values in the X and Y columns when m is left as 1 and:
   b = 0
   b = 3
   b = -5
   

2. Increasing or decreasing the value of b also affects the graph. Describe the change in the graph when m = 1 and:
   b is changed from 0 to 3
   b is changed from 0 to 1/2
   b is changed from 0 to -6
   

3. Find the y-intercept for each of the following:
   y = 3x+2
   y = -2x+5
   y = x-8
   

4. In the equation y = mx+b, m affects the steepness and direction of the line. What does b control?

5. Write the equation of a line:
   with slope 4 and y-intercept 2
   with slope -6 and y-intercept 6
   with slope 0 and y-intercept -1
   with slope 2/3 and y-intercept 0