7.4C I can determine the constant of proportionality (k = y/x) within mathematical and real-world problems

Supports 7.4A* represent constant rates of change in mathematical and real-world problems given pictorial, tabular, verbal, numeric, graphical, and algebraic representations, including d = rt, 8.4B* graph proportional relationships, interpreting the unit rate as the slope of the line that models the relationship, A.3B* calculate the rate of change of a linear function represented tabularly, graphically, or algebraically in context of mathematical and real-world problems