Answer:
c and d are both correct.
Explanation:
See the attached worksheet.
Identify the equations for the two lines on the graph. They are labelled in the attachment.
Then analyze what it would take for the two straight line equations to correctly reflect the inequalities shown by the graph (the darker points are ALL possible solutions). As noted in the attachment, we can assign the inequalities that would result in the darker areas.
Two answer options are identical. Options c and d are both correct.