Assess students' basic understanding of slope and y‑intercept in linear equations and their graphs. Tasks include identifying slope and y‑intercept from equations (slope‑intercept and standard forms) and from plotted lines, computing slope from two points, interpreting slope sign and y‑intercept meaning in context, writing equations in y = mx + b given slope and intercept or two points, and sketching simple lines. Emphasis: conceptual understanding and introductory procedural skills for grades 9–12.