The question is worded as follows:
find the midpoint (a,b) between the two points (-5,5),(-4,2).
Then it has two answer fields. one for A= and another for B=. How am I supposed to answer this?
The midpoint betweens two others is defined as the one with equal distance to both. That would mean that if , and is the midpoint between those, we have:
Since this is , the midpoint would be middleway the line connecting and .