SAT2考试是专项测验，有数学、物理、化学、生物、外语等，根据各专业和学校的要求参加。下面我们来看一个SAT2数学专题——The Coordinate Plane。
The coordinate plane is a plane determined by two perpendicular lines, the x-axis and the y-axis. The x-axis is the horizontal axis, and the y-axis is the vertical axis. Every point in the plane can be stated by a pair of coordinates that express the location of the point in terms of the two axes. The intersection of the x- and y-axes is designated as the origin, and its point is (0, 0).