This math topic focuses on understanding the concept of perpendicular slopes. It involves problems where students are asked to determine the slope that would be perpendicular to a given slope. The worksheet provides problems with both decimal and fractional representations of slopes, further requiring the students to convert or compare different forms of slopes to ascertain which one is perpendicular. This set of problems is part of an introductory unit on slopes and perpendicular lines, aimed at enhancing students' skills in working with line equations and understanding the geometric relationship between perpendicular lines in a Cartesian plane.