$\"\"$

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a)

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The temperature function is $\"\"$ .

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The slope - intercept form of a line equation is $\"\"$ ,

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where $\"\"$ is the slope and $\"\"$ is the $\"\"$ intercept.

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Compare the temperature equation with slope-intercept form of the line equation.

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Slope is $\"\"$ and $\"\"$ intercept is $\"\"$ .

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Slope represents the rate of change of temperature with respect to time is $\"\"$ .

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$\"\"$ intercept represents that the temperature in 1900 is $\"\"$ .

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$\"\"$

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(b)

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$\"\"$ represents years since 1900.

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Find the average global surface temperature in 2100.

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Years since 1900 is $\"\"$ .

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Substitute $\"\"$ in the equation $\"\"$ .

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$\"\"$

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The expected temperature in 2100 is $\"\"$ .

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$\"\"$

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(a) Slope represents the rate of change of temperature with respect to time is $\"\"$ .

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$\"\"$ intercept represents that the temperature in 1900 is $\"\"$ .

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(b) The expected temperature in 2100 is $\"\"$ .