The temperature T in degrees Fahrenheit is approximately a linear function of the number C of cricket chirps per minute. Twenty cricket chirps per minute corresponds to a temperature of 42°F. Each additional trip permit it corresponds to an increase of .25°. He has a formula to express T as linear function of C

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.