Rate of change of linear functions Currency exchange When you travel to a different country, you must buy money in the currency of the country you are travelling to. The prices of various currencies, determined by the international market, change every day. The tool below presents functions for converting dollars into various currencies. The functions are valid for a certain day; up-to-date rates of exchange are available on many Internet sites. What is the meaning of the differences in the rate of change of the graphs describing the conversion of dollars into other currencies? Write correspondence rules for converting dollars into various currencies. Use the input box labelled "g" to check the rules by displaying the graphs associated with the correspondence rules. Use the Change at a constant rate tool to construct a function that converts rubles into dollars and a function that converts pounds to dollars. Write the correspondence rules of these functions. Explain the relation between the rates of change when converting from one currency to another and when converting in the opposite direction. Use the Change at a constant rate tool to construct a function that converts rubles to pounds. Write the correspondence rule of the function. dollars change g change of g dollars grid from dollars to peso (Argentina) yen (Japan) pound (Great Britain) rupee (India) ruble (Russia) difference of x values initial y value change g

Change at a constant rate Gym 200-meter dash Wages Swimming pool Burning calories Growing hair Currency exchange Bank accounts Value tables and rate of change Rides Trips Constant and non-constant rate Graphs and correspondence rules Exercise 1 Exercise 2 Exercise 3 Exercise 4 Exercise 5