The continental shelf, continental slope, and continental rise combine to form the

Answer;

Continental margin

Explanation;

-Continental margin is the section of the ocean is composed of the continental shelf, the continental slope, and the continental rise.

-The continental margin is that portion of the ocean that separates the continents from the deep ocean floor. The continental margin is usually subdivided into three major sections: the continental shelf, the continental slope, and the continental rise. In addition to these sections, one of the most important features of the continental margin is the presence of very large submarine canyons that cut their way through the continental slope and, less commonly, the continental shelf.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west