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 - 5. (a) What is the temperature at a depth of 1 m (100 cm)? °C (b) Sketch a graph of the linear equation. 10h 10h 20 40 60 80 100 120 140 20 40 60 80 100 120 140 -5 -5 -10 1아 10h 20 40 60 80 100 120 140 20 40 60 80 100 120 140 10 -10H (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 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. 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.

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter1: Equations And Graphs
Section1.CT: Chapter Test
Problem 8CT
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A geologist measures the temperature T (in °C)
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 – 5.
(a) What is the temperature at a depth of 1 m (100 cm)?
°C
(b) Sketch a graph of the linear equation.
T
10
10
5
20
40
60
80
100 120
140
20
40
60
80
100 120
140
O-10
o-10F
T
10-
10-
5
X
X
20
40
60
80
100 120
140
20
40
60
80
100 120
140
10
10F
(c) What do the slope, the x-intercept, and T-intercept of the graph represent?
o 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.
o 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.
o 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.
o 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.
Transcribed Image Text:A geologist measures the temperature T (in °C) 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 – 5. (a) What is the temperature at a depth of 1 m (100 cm)? °C (b) Sketch a graph of the linear equation. T 10 10 5 20 40 60 80 100 120 140 20 40 60 80 100 120 140 O-10 o-10F T 10- 10- 5 X X 20 40 60 80 100 120 140 20 40 60 80 100 120 140 10 10F (c) What do the slope, the x-intercept, and T-intercept of the graph represent? o 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. o 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. o 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. o 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.
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