On a 2-dimensional graph, the x- and y-axes typically cross

the point where they are cut receives the name of origin

Explanation:

The Cartesian plane (where the two-dimensional graphics are represented) is formed by two numerical lines, one horizontal and one vertical that are cut at one point. The horizontal line is called the axis of the abscissa or of the x (x), and the vertical, axis of the ordinates or of the y, (y); the point where they are cut receives the name of origin. and it is generally divided into four parts that are called quadrants.

The origin of coordinates is the reference point of a coordinate system. At this point, the value of all system coordinates is null.

the answer is a 3.8cm

explanation:

the part of the wave he is travelling on is the crest