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Dive deep into rational functions, inverse variation, and complex fractions. Learn to solve rational equations and tackle addition and subtraction of rationals with ease. Practice identifying asymptotes and graphing functions.
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Review • Inverse Variation Function – A function that can be modeled with the equation y = k/x, also xy = k; where k does not equal zero.
Review • Inverse Variation Function - Graph
Review • Rational Functions - Asymptotes
Review • Rational Functions - Asymptotes
Review • Rational Functions – Sketching the graph Draw all the asymptotes Determine where it is positive and negative Determine where it is Zero Sketch
Review • Rational Expressions – Multiplication / Division Restrictions – When the denominator is zero When dividing by zero Simplify by canceling like terms (factors)
Addition Subtraction Rationals • Complex Fractions – A fraction that has a fraction in the numerator or denominator
Solving Rational Equations • Multiplying variables on both sides of an equal sign may introduce extraneous solutions. • Check for extraneous solutions by plugging into the original equation.
Solving Rational Equations • If rational functions are added in an equation, use the LCD to multiply all terms and “clear” the fraction
Homework • 9-5 Adding and Subtracting Rationals First Column • 9-6 Solving Rational Expressions First Column End at #38
Homework • 9-5 Adding and Subtracting Rationals First Column