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Q.

The graph $A B$ shown in figure is a plot of temperature of a body in degree Celsius and degree Fahrenheit. Then

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a

Slope of line $A B$ is $\frac{9}{5}$

b

Slope of line $A B$ is $\frac{1}{9}$

c

Slope of line $A B$ is $\frac{3}{9}$

d

Slope of line $A B$ is $\frac{5}{9}$

answer is B.

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Detailed Solution

Slope of line $A B$

$\frac{∆ C}{∆ F} = \frac{100 - 0}{212 - 32} = \frac{100}{180} = \frac{5}{9}$

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