A certain rational function has the following graphical characteristics: • A hole at

MATHEMATICS · Single correct · AP · AP Precalculus · Polynomial and Rational Functions · Polynomial and Rational Functions

Problem

A certain rational function has the following graphical characteristics: • A hole at x=1x=1. • A vertical asymptote at x=3x=3. • The point (0,2)(0,2) lies on the graph. Which of the following formulas could define such a function? (a) (x−1)(x−6)x+3\displaystyle \frac{(x-1)(x-6)}{x+3} (b) (x−1)(x−6)(x−1)(x−3)\displaystyle \frac{(x-1)(x-6)}{(x-1)(x-3)} (c) x−6x−3\displaystyle \frac{x-6}{x-3} (d) (x−1)(x−6)x−3\displaystyle \frac{(x-1)(x-6)}{x-3}

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