
Working with Coordinate Plane GridsThe GED Mathematics Test also includes another type of grid—the coordinate plane grid. There will be two coordinate plane grids, one on each part of the GED Mathematics Test. To be able to solve problems using coordinate plane grids, students must understand the basic components of the grid, as well as have an understanding of positive and negative integers. Coordinate Plane Grids The coordinate plane grid consists of thirteen rows and thirteen columns. The center row is the xaxis. It runs horizontally through the grid. The center column is the yaxis. It runs vertically through the grid. The yaxis and xaxis intersect at the origin (shown here by the middle circle). XAxis YAxis 