18) A farmer notices that there is a linear relationship between the number of bean stalks, n, she plants and the yield, Y. When she plants 4 stalks, each plant yields 120 ounces of beans. When she plants 9 stalks, each plant yields 220 ounces of beans. Write the equation of the form, Y(n) = mn + b.

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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.