You have been offered two jobs!  You don't know which one to accept.   Costco has offered you $16/hour.  If we let x= the number of hours worked in a week and y=your weekly paycheck, the linear model would be y=16x. Best Buy has offered you a minimum wage position at $7.25/hour, but you get a weekly incentive of $300 as long as you meet your sales quota.  This linear model would be y=7.25x+300. Last week you were asked "At how many hours/week would both jobs give you the same weekly pay?"  (find the intersection point, any of the ways discussed in section 1.3). Find the intersection point using the Gauss Jorden Elimination Method

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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.