Many Precalculus Topics are listed under Algebra. Under Precalculus, I'm basically listing topics that would not be done in a Beginning or Intermediate Algebra class.
Conic Sections-Parabolas, Circles, Ellipses, Hyperbolas
Derivative and Tangent Line (using slope and limits)
Graphing- Many Types
Nonlinear Systems of Equations
Polynomials - Roots, Zeroes of Polynomial, Rational Root Theorem, etc.