Assess students’ ability to select and justify the most efficient method (substitution, elimination, or graphing) for solving two-variable linear systems across varied contexts—including coefficients and constants expressed as fractions and decimals—and for special cases that produce no solution or infinitely many solutions. Tasks require solving representative systems using a chosen method, comparing alternative approaches for efficiency and accuracy, providing written justification of method choice and steps, and interpreting the type of solution and its mathematical implications.