All in order:Select: vertical or horizontal, Select: horizontal or diagonal, vertical or diagonal, Select: vertical, all, horizontal, Select: is, is not

A student claimed that the transformation (x, y) - (3x, y) is a rigid motion because the segment joining (5, 2) to (5, 4) is transformed to the segment joining (15, 2) to (15, 4), and both of these segments have the same length. Complete the explanation of the student's error. The transformation is a horizontally| stretch by a factor of 3 so it preserves the length of (select) > segments but not the length of (select) ~segments. In order to be a rigid motion, the transformation must preserve (select) lengths, so this transformation (select) v a rigid motion