A motorboat travels 252 kilometers in 6 hours going upstream. It travels 420 kilometers going downstream in the same amount of time. What is the rate of the boat in still water and what is the rate of the current? Rate of the boat in still water:    km/h Rate of the current:    km/h

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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.