In this seventh-grade math worksheet, students are required to determine the constant of proportionality for each proportional relationship. The constant of proportionality is also referred to as the unit rate, which is the ratio of y to x and is usually represented by the variable k. This two-page algebra worksheet comprises mixed problems that involve either tables, graphs, or equations, representing different real-world examples of proportional relationships. Students are expected to calculate the value of k in each scenario. For extra resources on the constant of proportionality, students can refer to "Identify the Constant of Proportionality From a Graph" and "Identify the Constant of Proportionality From Tables."