A geologist measures the temperature T (in °C) of the soil at various depths below the surface and finds that at a depth of x cm, the temperature is given by  T = 0.09x − 6. (a) What is the temperature at a depth of 1 m (100 cm)? °C (b) Sketch a graph of the linear equation.         (c) What do the slope, the x-intercept, and T-intercept of the graph represent? The slope represents the rise in temperature as the depth decreases. The T-intercept represents the depth of the "frost line," where the soil below is not frozen and the x-intercept is the surface temperature of the soil.The slope represents the rise in temperature as the depth increases. The T-intercept is the surface temperature of the soil and the x-intercept represents the depth of the "frost line," where the soil below is not frozen.     The slope represents the rise in temperature as the depth decreases. The T-intercept is the surface temperature of the soil and the x-intercept represents the depth of the "frost line," where the soil below is not frozen.The slope represents the rise in temperature as the depth increases. The T-intercept represents the depth of the "frost line," where the soil below is not frozen and the x-intercept is the surface temperature of the soil.

Algebra and Trigonometry (MindTap Course List)
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ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
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Chapter1: Equations And Graphs
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A geologist measures the temperature T (in °C) of the soil at various depths below the surface and finds that at a depth of x cm, the temperature is given by 

T = 0.09x − 6.
(a) What is the temperature at a depth of 1 m (100 cm)?
°C

(b) Sketch a graph of the linear equation.
   
   

(c) What do the slope, the x-intercept, and T-intercept of the graph represent?
The slope represents the rise in temperature as the depth decreases. The T-intercept represents the depth of the "frost line," where the soil below is not frozen and the x-intercept is the surface temperature of the soil.The slope represents the rise in temperature as the depth increases. The T-intercept is the surface temperature of the soil and the x-intercept represents the depth of the "frost line," where the soil below is not frozen.     The slope represents the rise in temperature as the depth decreases. The T-intercept is the surface temperature of the soil and the x-intercept represents the depth of the "frost line," where the soil below is not frozen.The slope represents the rise in temperature as the depth increases. The T-intercept represents the depth of the "frost line," where the soil below is not frozen and the x-intercept is the surface temperature of the soil.

 

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