McGraw Hill
Glencoe Online: Algebra 2 Lesson by Lesson Quizzes
Though this site accompanies a textbook, the lesson-by-lesson quizzes in each chapter offer great practice to any student of Algebra 2. Quizzes are self-grading and offer immediate feedback.
Texas Education Agency
Texas Gateway: Solving Linear Equations and Inequalities
When given a table, equation or verbal description, students will solve one- and two-variable equations and inequalities using algebraic steps or graphing methods.
Other
All Elementary Mathematics: Trigonometric Equations
This site gives a definition for what a trigonometric equation is, gives a listing of the simplest trigonometric equations, and lists seven main methods of solution of trigonometric equations with examples.