The mass and volume has direct proportional to each other.
The volume of the object is directly proportional to its mass which means that if the volume increases the mass of the object increases also increase and vice versa. Due to this direct relationship, the line of regression will go straight between X and Y axis.
So we can conclude that mass and volume has direct proportional to each other.
Learn more about volume here: https://brainly.com/question/1972490
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