The time taken, t (in seconds), to boil water in a kettle is inversely proportional to the power, p (in watts) of the kettle. A full kettle of power 1500 W boils the water in 400 seconds. A. Write a formula for t in terms of p. B. A similar kettle has a power of 2500 W. Can this kettle boil the same amount of water in less than 3 minutes?

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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.