1. Proportional or Non-proportional?
8.F.4

2. Use this Flow Chart to help you with Proportional & Non-proportional Linear Relationships
Is there a Constant Rate of Change?
Is it a Function?
YES
YES NO NO
State it is NOT A FUNCTION
State there is a VARIABLE RATE OF CHANGE

3. Use this Flow Chart to help you with Proportional & Non-proportional Linear Relationships
Is there a Constant Rate of Change?
LINEAR
(It graphs to be a straight line!)
YES
Proportional
-or-
Non-proportional? NO
PROPORTIONAL
State there is a VARIABLE RATE OF CHANGE
NON-PROPORTIONAL

4. Proportional
-or-
Non-proportional?
Cross Products are EQUIVALENT
𝑦=𝑘𝑥
The TABLE contains the ordered pair (0,0)
The GRAPH will be a line that passes through the ORIGIN
PROPORTIONAL
NON-PROPORTIONAL
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 dos NOT pass through the ORIGIN