Activity 4: Real Rules! (GLEs: 46, 47)
A site that gives city/hwy mileage and average cost of fuel is available at http://www.fueleconomy.gov/feg/FEG2004_GasolineVehicles.pdf
US Postal rates http://www.usps.com/consumers/domestic.htm#first
Have students graph these sequences and determine the equation for the mileage graphed, then describe the rate of change and how this relates to the slope. Have students create questions that could be answered once the rule for their line has been determined.
On-Line Graphing Calculators Live Math Support: Live Graphing Calculator http://support.livemath.com/resources/student/calculator/ Online Graphing Calcularor http://www.geocities.com/ojjk/calculator.html GCalc Coolmath's Graphing Calculator http://www.coolmath.com/graphit/ Algebra.Help Function Graphing Calculator |