100 points !
the coordinate plane below represents a community. points a through f are houses in the community.

graph of a coordinate plane. point a is at negative 5, 5. point b is at negative 4, negative 2. point c is at 2, 1. point d is at negative 2, 4. point e is at 2, 4. point f is at 3, negative 4.

part a: using the graph above, create a system of inequalities that only contains points c and f 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 c and f are solutions to the system of inequalities created in part a. (3 points)

part c: erica wants to live in the area defined by y < 7x − 4. explain how you can identify the houses in which erica is interested in living. (2 points)