UPSKILL MATH PLUS

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1. The graph relates temperatures \(y\)(in Fahrenheit degree) to temperatures \(x\)(in Celsius degree).
 
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(a) Find the slope and \(y\) intercept.
 
Answer:
 
Slope \(=\) ii 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.
 
2. Find the equation of a line passing through the point \(A(1,4)\) and perpendicular to the line joining the points \((2,5)\) and \((4,7)\).
 
Answer:
 
The equation of the straight line is