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Please help I want to learn how to solve this

Please help I want to learn how to solve this-example-1

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When talking about the rate of change on a line, we're talking about the slope.

Now, let's use points:


\begin{gathered} (4,-10) \\ \text{and} \\ (7,-30) \end{gathered}

to estimate the slope of the line depicted in the graph.

(We'll get an aproximate value, since the graph is not suited for precise numerical calculations)

This way,


m=(-30-(-10))/(7-4)\rightarrow m=(-30+10)/(3)\rightarrow m\approx-6.66

The closest value to the slope we've calculated is:

F. -6.5°C/km

(Answer)

User Jack Cole
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