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Proportional or Non-proportional? 8.F.4 Use this Flow Chart to help you with Proportional & Non-proportional Linear Relationships Is it a Function ? YES Is there a Constant Rate of Change? NO NO State it is NOT A FUNCTION State there is a VARIABLE RATE OF CHANGE YES Use this Flow Chart to help you with Proportional & Non-proportional Linear Relationships Is there a Constant Rate of Change? NO YES LINEAR (It graphs to be a straight line!) Proportional -orNon-proportional? State there is a VARIABLE RATE OF CHANGE NON-PROPORTIONAL PROPORTIONAL Proportional -orNonproportional? PROPORTIONAL • Cross Products are EQUIVALENT • 𝑦 = 𝑘𝑥 • The TABLE contains the ordered pair (0,0) NON-PROPORTIONAL • The GRAPH will be a line that passes through the ORIGIN • Cross Products are NOT EQUIVALENT • 𝑦 = 𝑚𝑥 + 𝑏 • The TABLE does not contain the ordered pair (0,0). It has 0, 𝑏 • The GRAPH will be a line that does NOT pass through the ORIGIN
