Alfiyah, K., & Arisa, N. (2025). STUDENTS’ CONCEPTUAL UNDERSTANDING OF SYSTEMS OF LINEAR EQUATIONS IN TWO VARIABLES: A DESCRIPTIVE QUANTITATIVE STUDY AT THE JUNIOR HIGH SCHOOL LEVEL. Perpendicular : Journal of Mathematics Education and Learning, 1(2), 80-89. https://doi.org/10.61994/perpendicular.v1i2.1532