Variable is a letter next to a number whether it’s x or y it can be any letter really but main ones is x and y and data is something written down from an oberservartion whether it’s an experiment or table etc.
Possible motives for murder include lust, loathing, jealously, a serious yearn for money, vengeance, etc.
Answer:
valance electrons
Explanation:
the lines between the atoms represent the number of valance electron. simple isn't it.