Chapter 1
Algebra
Course: Sat Prep
Subject: Math
Chapter: Algebra
By the end of this lesson, you will be able to:
- Read and interpret information presented on graphs.
- Identify and interpret x-intercepts and y-intercepts.
- Determine intervals where a function is increasing, decreasing, or constant.
- Interpret piecewise graphs and piecewise-defined functions.
- Analyze graphs in real-world contexts.
- Draw conclusions from graphical data without unnecessary calculations.
- Solve Digital SAT-style graph interpretation problems.
Graphs are visual representations of relationships between variables. Instead of presenting information in equations or tables, graphs allow us to quickly observe patterns, trends, changes, and relationships.
Many algebra questions require students to interpret graphs rather than perform lengthy calculations. A graph may represent a linear function, a piecewise function, a real-world situation, or data collected from an experiment. Students must be able to identify key features of a graph and explain what those features mean.