Rational Graphing June 1 2009
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This document provides steps for graphing rational functions: 1) Find and sketch any vertical asymptotes where the denominator is zero. 2) Find and sketch the horizontal asymptote based on the degrees of the numerator and denominator. 3) Find the y-intercept by evaluating the function at x=0. 4) Find any x-intercepts by setting the numerator equal to zero. 5) Use sign analysis to determine where the function is positive or negative. 6) Use smooth curves to complete the graph.
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