Looking at the graph below, we can see that Stressor A has a positive effect on

Looking at the graph below, we can see that Stressor A has a positive effect on the response of interest and Stressor B has a negative effect on the response of interest. Remember that the response could be anything like growth or sprint speed – this is a theoretical graph.
For this collaborative discussion, here’s the prompt I’d like you to answer:
What is the formula to get the additive effect? (Hint: you can define a new variable or new variables). Make sure you explain what all the terms in your equation are!
Based on your formula, what number would the additive effect be?
List which of the grey bars (left, middle, right) is the additive, synergistic, or antagonistic effect and how do you know? Explain your reasoning!
Based on what you know about how synergistic and antagonistic effects work, give a theoretical number for the synergistic and antagonistic bars.