The coordinate plane below represents a city. Points A through Fare schools in the city. 4
A
3
D
2
00
+
-6 -5 -4 -3 -2 -1
++
1 2 3 4 5 6
TI
-2
-3
С
-4 +
-5
-6t
Part A: Using the graph above, create a system of inequalities that only contains points B and C in the overlapping shaded
regions. Explain how the lines will be graphed and shaded on the coordinate grid above. (5 points)
Part B: Explain how to verify that the points B and C are solutions to the system of inequalities created in Part A. (3 points)
Part C: Lisa can only attend a school in her designated zone. Lisa's zone is defined by y> 2x + 5. Explain how you can identify the
schools that Lisa is allowed to attend. (2 points)

Each of the following data sets has a mean of x = 10. (i) 8 9 10 11 12 (ii) 7 9 10 11 13 (iii) 7 8 10 12 13 (a) without doing any computations, order the data sets according to increasing value of standard deviations. (i), (iii), (ii) (ii), (i), (iii) (iii), (i), (ii) (iii), (ii), (i) (i), (ii), (iii) (ii), (iii), (i) (b) why do you expect the difference in standard deviations between data sets (i) and (ii) to be greater than the difference in standard deviations between data sets (ii) and (iii)? hint: consider how much the data in the respective sets differ from the mean. the data change between data sets (i) and (ii) increased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). the data change between data sets (ii) and (iii) increased the squared difference îł(x - x)2 by more than data sets (i) and (ii). the data change between data sets (i) and (ii) decreased the squared difference îł(x - x)2 by more than data sets (ii) and (iii). none of the above