A formula converting temperature from degrees Celsius to equivalent degrees Fahrenheit is: °F = (9/5) × °C +32  A simper model would be °F= 2×°C +32 (a) Calculate the absolute error of converting 20°C to °F (b) Determine the relative error

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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.