Unlocking the Power of Variables

Algebra is all about using symbols to represent numbers and finding unknowns. On the SAT, you'll encounter equations, inequalities, and linear relationships.

Core Ideas

• Solving Linear Equations: Find the value of the variable that makes the equation true.
• Systems of Equations: Solve for variables using substitution or elimination.
• Linear Inequalities: Find all possible values that satisfy an inequality.
• Slope and Intercept: Understand the equation of a line, \( y = mx + b \).

Step-by-Step Problem Solving

1. Isolate the variable.
2. Simplify both sides.
3. Check your answer in the original equation.

Where You'll Use This

From predicting costs to planning travel, algebra helps you model and solve countless real-world problems.