Chapter 3: Part A - Linear Rational Functions.

Question 1

How do you find the vertical asymptote of y = (ax + b)/(cx + d)?

Answer 1

Set the denominator equal to zero (0) and solve. E.g. cx + d = 0, x = -d/c.

Question 2

How do you find the horizontal asymptote of y = (ax + b)/(cx + d)?

Answer 2

They can be found from dividing the numbers in front of the highest power of the ‘x’ term of the numerator and denominator. E.g. y = ax/cx, y = a/c.