Five mark example problem I — task. Mathematics State Board, Class 10.

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The graph relates temperatures

$y$ (in Fahrenheit degree) to temperatures

$x$ (in Celsius degree).

(a) Find the slope and

$y$ intercept.

Answer:

Slope

$=$

$\frac{i}{i}$ and

$y$ intercept

$=$

(b) Write an equation of the line.

(c) What is the mean temperature of the earth in Fahrenheit degree if its mean temperature is

$25^{\circ}$ Celsius?

$^{\circ}$ Fahrenheit.

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