Answer
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Work Step by Step
The relationship between temperature in degrees Fahrenheit (TF) and temperature in degrees Celsius (TC) is given by the formula: $$TF = \frac{9}{5}\cdot TC + 32.$$ Therefore, the slope of the line when TF is plotted versus TC is $\frac{9}{5}$ and the $y$-intercept is $32$.
The relationship between temperature in degrees Celsius (TC) and temperature in kelvins (TK) is given by the formula: $$TC = TK - 273.15.$$ Therefore, the slope of the line when TC is plotted versus TK is $1$ and the $y$-intercept is $-273.15$.
It's important to note that the $y$-intercept is the point where the line crosses the $y$-axis and it represents the value of the variable when the other variable is zero.