What is qr? Pls help

John bought 5 lemons and used 2 of them for a salad how much did he use for.a salad . he used % of the lemons.

Determine the relationship of ab and cd given the following points

In two or more complete sentences, determine the appropriate model for the given data and explain how you made your decision. (1,-1), (2,0.5), (5,1.5), (8,2)