Module 2: Lesson 1

 

Self-Check 4

2. Question 14 on page 75
   14.  
       1. The graph shows that as the election approaches, the polling errors decrease.
       2. The equation of the graph is You know that there is a reflection about the y-axis because the graph is facing the opposite direction of Because the transformed graph is still going through the origin, you know that there are no translations. You can then use the point (−150, 6) to substitute into the equation to determine the value of a.
       3. There has been a vertical stretch by a factor of 0.49 about the x-axis and a reflection across the y-axis.
          

© 2012 Alberta Education