Precalculus 2017

Analytically determining the Graph of a Rational Function:

Step 1: Find the domain
Step 2: Write the function in the lowest terms
Step 3: Find the intercepts
Step 4: Locate the asymptotes
Step 5: Graph using previous learned skills

Direct Variation: How one quantity varies in relation to another quantity. If y is directly proportional to x than it shows direct variation.
y=kx
k= "constant of variation"

Inverse Variation: y=\frac{k}{x}
Joint/Combined Variation:
1. y=kxz
2. y=\frac{ktr}{m}
a. At least three variables
b. "Y varies jointly with x and z" (1)
c. "Y varies jointly with t and r and inversely with m" (2)