# Help!--Algebra II--Rational Function Rules

## 7 terms

### domain

x cannot equal the zeroes in the denominator

### removable discontinuities (holes)

when the same variable factor occurs in the numerator and denominator it is cancelled. Plug that value into the equation to solve for the y-value.

### vertical asymptote

the value(s) of the denominator than makes it equal to zero

### horizontal asymptote

y=ax^m/bx^n
if m=n then divide a/b
if m<n then y=0
if m>n then there is none

### coordinates of where the graph crosses the horizontal asymptote

x^2+1/x^3=value of horizontal asymptote

### x-intercept

f(x)=p(x)/q(x)
solve p(x)=0 after simplification

### y-intercept

when x=0 solve for y