The length `L` (in centimetres) of a copper rod is a linear function of its Celsius temperature C. In an experiment, if `L=124.942` when `C=20` and `L=125.134` when `C=110`, express `L` in terms of `C .`

Explanation

`(20,124.942)` and `(1.0,125.134)` can be taken as two points. Slòpe of the line `=125.134-124: 942/110-20=0.192/90`.
`therefore` Equation of line is `L-124.942=0.192/90(C-20)`
`because L=0.192/90(C-20)+124.942^(circ)`