3
Relationship is proportional
If you had a function to relate hours to pages read, your x would be hours (as in time passed, or distance along the graph) and your y would be pages read after x hours.
4
Relationship is proportionan The variables would most likely have x as being ounces of almonds, and y being the solved answer for protein in x ounces of almonds.
5-6 have a linear relationship, but its not proportional because the function does not pass through the origin. for it to be linear and proportional, its slope must be the same throughout, and the function value at 0 must equal 0.
5 doesn't pass through the origin
the same thing applies for 6. it is a linear function, but does not pass through the origin. therefore, it is not proportional.
downloaded the lesson on proportional vs nonproportional from study . com for educational use if you want
hope this helps
- jeron
:)