08Cvariablerates

= Variable Rates of Change =


 * If the rate does not produce a straight line graph,
 * we call it a ** variable rate of change **
 * because the rate varies or alters


 * A variable rate of change
 * may have intervals during which the rate is constant
 * sections of straight lines on the graph
 * may continuously alter
 * curving lines on the graph

Comment on the sections of the graph shown here
 * Example 1 **


 * Solution:**


 * The entire graph (AD) shows a variable rate of change


 * Section AB has a constant negative rate
 * Section BC has a constant zero rate
 * Section CD has continuously changing positive rate

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