This math topic focuses on identifying linear equations based on their slopes for lines that pass through the origin. Students are provided with the slope of a line and are tasked with selecting the correct linear equation from multiple choices that match the given slope. The skills practiced include investigating linear relationships, understanding the slope-intercept form of linear equations, and linking graphical representations to their algebraic expressions in the context of lines through the origin. This is part of a broader unit emphasizing line equations and graphing practices.