# Can someone please help me graph this? Identify the graph for the point E(-1,3,-1) in three dimensional space.

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Plotting points in three-dimensional space can be difficult when limited by the two dimensions of a piece of paper. However, the concept is roughly the same as it is for plotting points in two dimensions. In 3D, the *x*-axis and *y*-axis measure horizontal distance left, right, up, or down along the flat plane that is, say, the top of your desk. The *z*-axis runs vertically through that plane (imagine poking a stick through your paper straight through the origin); it measures vertical distance above or below the plane on which the *x*- and *y*-axes lie. Points are plotted in the form (*x*, *y*, *z*). The graphing process can be difficult to understand from a written description, but the link below should help. It is a 3-D point plotter that shows what the three-dimensional coordinate plane looks like and helps you plot the points.