Standard RP.1 - Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units.
Standard RP.2.A - Decide whether two quantities are in a proportional relationship by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.
Standard RP.2.B - Identify the constant of proportionality in tables, graphs, equations, diagrams and verbal descriptions of proportional relationships.
Standard RP.2.C - Represent proportional relationships by equations.
Standard RP.3 - Anaylze proportional relationships and use them to solve real-world and mathematical problems. Use proportional relationships to solve multistep ratio and percent problems.