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Our Pre-Algebra classes have been diving into what functions are all about.  We have examined how to solve equations, looked at domains and ranges and how each is related to a specific function, we have explored the slope-intercept formula, graphed functions, and now we are solving systems of equations.  This chapter will allow the students to examine one type of problem that they will face in Algebra 1 or Algebra 1A. As we move through the chapter, we have focused on finding the x- and y-intercepts, slope, and where they might use these in the real world.