The length of a unit segment on the coordinate line is 1 cm; the length of the CD segment is 16 cm

The length of a unit segment on the coordinate line is 1 cm; the length of the CD segment is 16 cm; the middle of the segment is depicted by a point with coordinates – 5 find the coordinates of points C and D.

Since we have the coordinate of the middle of the segment CD -5, and its length is 16 cm, in order to find the coordinate of its beginning point C, you need to count 8 unit segments to the left -5-8 = -13; To find the coordinate of its end B, you need to count 8 unit segments to the right -5 + 8 = 3.
Answer: C (-13), D (3)