**TI83F* AppVariable file 03/21/07, 14:38ï ÞGLA208ÞÜnav 26CE319875DD4F1B9DFDCB650E5220B1GLA208.GLA2081   asymptote?asymptote:ÖA line that a graph approaches but never intersects. complex fraction\complex fraction:ÖA fraction that has one or more fractions in the numerator or denominator. constant of variationGconstant of variation:ÖThe number k in an equation of the form Öy = kx. direct variation?direct variation:ÖAn equation of the form Öy = kx, where k = 0. inverse variation?inverse variation:ÖAn equation of the form xy = k, where k  0. joint variationŽjoint variation:Öy varies jointly as x^n and z^n if there is some nonzero constant k such that y = k(x^n)(z^n), where x  0, z  0, and n > 0. rational equationBrational equation:ÖAn equation that contains rational expressions. rational expression[rational expression:ÖAn algebraic fraction whose numerator and denominator are polynomials.  rational function¡rational function:ÖA function that contains rational expressions represented as the quotient of two polynomials in the form f(x) = (g(x))/(h(x)), where h(x)  0.  rational inequalitySrational inequality:ÖAny inequality that contains one or more rational expressions.n¤