Rajesh conducts an experiment to determine how quickly three different substances absorb heat. He measures the temperature of each substance over time. If he wants to quickly compare the heat absorption rates of the three substances, which data representation will probably be most useful to him?

A graph is useful for quickly comparing how temperature changes over time for several substances. The steepness of each line shows its rate of heating: a steeper line means the substance absorbs heat more quickly. A data table lists the measurements, but comparing rates across many time points is less immediate.

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