The function is defined for all real numbers

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

Problem

The function

f(x)=\dfrac{4x^{2}-5}{2x^{2}+7}

is defined for all real numbers

x

. Which of the following is the equation of the horizontal asymptote of the graph of

f

? (a)

y=\dfrac12

(b)

y=2

(c)

y=4

(d)

y=0