Sample quiz on rational functions with slant asymptotes
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  1. Can a rational function have BOTH a horizontal asymptote and a slant asymptote?
    A: Yes, always
    B: Yes, sometimes
    C: No, not possible
    D: Not sure
  2. If a rational function $\frac{p(x)}{q(x)}$ has a slant asymptote, then $\cdots\cdots$
    A: the degree of $p(x)$ exceeds the degree of $q(x)$ by $1$
    B: the degree of $q(x)$ exceeds the degree of $p(x)$ by $1$
    C: the degree of $p(x)$ and the degree of $q(x)$ are equal
    D: the degree of $p(x)$ exceeds the degree of $q(x)$ by $2$
  3. The equation of a slant asymptote (of a rational function $\frac{p(x)}{q(x)}$) is usually $\cdots\cdots$
    A: obtained by calculating the product $p(x)\times q(x)$
    B: the remainder of the long division of $p(x)$ by $q(x)$
    C: the quotient of the long division of $p(x)$ by $q(x)$
    D: of the form $y=mx$ and is difficult to calculate.
  4. Which of the rational functions below is NOT likely to have a slant asymptote?
    A: $y=\frac{x^2-4}{x+3}$
    B: $y=\frac{2x^2-x-1}{x+3}$
    C: $y=\frac{x^3-1}{x^2-9}$
    D: $y=\frac{x+1}{2x^2+5x+2}$
  5. Find the equation of the slant asymptote of the rational function $y=\frac{x^2-9}{x+2}$
    A: $y=x-2$
    B: $y=x+2$
    C: $y=x-5$
    D: $y=-5$
  6. What is the equation of the slant asymptote of the rational function $\frac{ax^2+bx+c}{x-2}$? (Assume $a,b,c\neq 0$)
    A: $y=ax+b$
    B: $y=a+bx$
    C: $y=ax+(b+2a)$
    D: $y=bx+(a+2b)$
  7. If the line $y=2x-1$ is the equation of the slant asymptote for the rational function $\frac{2x^2+bx+5}{x-1}$, the value of $b$ is $\cdots\cdots$
    A: $-3$
    B: $-1$
    C: $3$
    D: $1$
  8. Find the equation of the slant asymptote of the rational function $y=\frac{5x^2+2x+1}{3x+7}$
    A: $y=\frac{5x}{3}-\frac{29}{3}$
    B: $y=\frac{5x}{2}-\frac{29}{9}$
    C: $y=\frac{5x}{2}-\frac{35}{9}$
    D: $y=\frac{5x}{3}-\frac{29}{9}$
  9. Find the equation of the slant asymptote of the rational function $y=\frac{x^2-4x+4}{x-3}$
    A: $y=x-1$
    B: $y=1-x$
    C: $y=x+1$
    D: $y=x-2$
  10. Find the equation of the slant asymptote of the rational function $y=\frac{x^2-a^2}{x-b}$
    A: $y=x+a$
    B: $y=x-a$
    C: $y=x-b$
    D: $y=x+b$