### Concept (1)

We often see math applied to the real world through word problems, and the applications of linear equations are seen throughout all our math courses after Algebra. To understand applications of linear equations we need to have an understanding of slope, how to interpret a graph, and how to write an equation. In upper-level Algebra, we apply systems of linear equations to these problems as well.

### Sample Problems (10)

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###### Problem 5
Interpreting the x and y intercepts in applications of linear equations
###### Problem 6
Drawing and finding the equation for a line of best fit by hand and using it to make extrapolations or predictions
###### Problem 7
Using technology to enter data and determine a line of best fit or linear regression for a linear relationship
###### Problem 8
Making a graph and interpreting the x and y intercept and slope in the context of linear word problems
###### Problem 9
Writing linear equations to model real life situations
###### Problem 10
Money applications of linear word problems, including interpreting the slope and intercepts