(追記) (追記ここまで)
Shrink
Compression of a Graph
A transformation in which all distances on the coordinate plane are shortened by multiplying either all x-coordinates (horizontal compression) or all y-coordinates (vertical compression) of a graph by a common factor less than 1.
Note: When the common factor is greater than 1 the transformation is called a dilation or a stretch.
See also
Graph of an equation, compression of a geometric figure