The scatterplot illustrates the relationship between two quantitative variables: the amount of an active ingredient in a medicine and the level of pain relief (on a scale of 1 to 10).

The relationship in the scatterplot is

weak
positive and linear.
positive and nonlinear.
negative and moderately strong.

The scatterplot illustrates the relationship between two quantitative variables the amount of an active ingredient in a medicine and the level of pain relief on class=