Student Activity: To investigate an ESB bill - Project Maths
Student Activity: To investigate an ESB bill - Project Maths
Student Activity: To investigate an ESB bill - Project Maths
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c. What shape is the graph? Explain your <strong>an</strong>swer._______________________________________________________________d. Where does this graph cut the y axis <strong>an</strong>d what number does this relate to onthe table?_______________________________________________________________e. What is the rate of ch<strong>an</strong>ge of the graph?_______________________________________________________________f. Find 2 points on the line <strong>an</strong>d calculate the slope of the line._____________________________________________________________________________________________________________________________g. Write <strong>an</strong> algebraic formula to represent the cost of <strong>an</strong> <strong>ESB</strong> <strong>bill</strong> using thecharges used in this question?_______________________________________________________________h. Where does the slope appear i) in the table, ii) in the graph <strong>an</strong>d iii) in theformula?_______________________________________________________________Draft 01 © <strong>Project</strong> <strong>Maths</strong> Development Team 2011 <strong>ESB</strong> <strong>bill</strong> Page 3 of 8
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