(d) (i) 2 2 marks for correct equation 1 mark for an equation which is of the correct form, but has one of the gradient or intercept incorrect. (ii) The equation of the line is and graph is shown on the 2 1 mark for correct equation its’ axes above. 1 mark for correct graph of equation given by student. (iii) The break-even point is (4, 300) which means you need to 1 1 mark for correct answer make 4 chairs to break even. from graph. students’
(d) (i) 2 2 marks for correct equation 1 mark for an equation which is of the correct form, but has one of the gradient or intercept incorrect. (ii) The equation of the line is and its’ graph is shown on the axes above. 2 1 mark for correct equation 1 mark for correct graph of equation given by student. (iii) The break-even point is (4, 300) which means you need to make 4 chairs to break even. 1 1 mark for correct answer from students’ graph.
wme_hsc_solutions_mathematics_general_2_2015.docx