About This Lesson
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In Question 9b:
(i)Writing three sets of inequalities from worded problems
(ii) Shading the region of the graph which represents the solution set for the three inequalities in part(i) above
(iii) Stating the coordinates of the points which represent the vertices of the shaded region on the graph in part (ii) above.
(iv) Showing how to calculate the MAXIMUM profit on a sale by using the vertices stated in part(iii) above
Taken from CXC CSEC Math Exam Paper 2 Question 9b May 2012.
