SOLUTION: A, B, C are three points on a line. The coordinates of A and B are -4 and 8 respectively. If C is the midpoint of line segment AB, what is the coordinate of C?

Algebra ->  Length-and-distance -> SOLUTION: A, B, C are three points on a line. The coordinates of A and B are -4 and 8 respectively. If C is the midpoint of line segment AB, what is the coordinate of C?      Log On


   

Question 1186614: A, B, C are three points on a line. The coordinates of A and B are -4 and 8 respectively. If C is the midpoint of line segment AB, what is the coordinate of C?
Answer by ikleyn(52754) About Me  (Show Source):
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In this case, coordinate of C is the arithmetic mean of coordinates of points A and B


    C = %28A+%2B+B%29%2F2 = %28-4+%2B+8%29%2F2 = 4%2F2 = 2.    ANSWER