The nature of the graph between the temperature in Fahrenheit and Celsius values is:
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Temperature conversions between Fahrenheit and Celsius are always linear. Use the formula $F = \frac{9}{5}C + 32$ to determine the nature of the graph.
The relationship between Fahrenheit ($F$) and Celsius ($C$) is given by the linear equation $F = \frac{9}{5}C + 32$.
This is a linear relationship, so the graph of $F$ versus $C$ is a straight line with a slope of $\frac{9}{5}$ and a y-intercept of 32.