The sign: Foamy or bubbly urine. What it means: You could have kidney disease. When your kidneyâs filtering units arenât working properly, that can lead to a build-up of protein in your urine. The protein then creates a foamy appearance when it hits the water in the toilet.
This gives us a point in the x1-x2 or phase plane that we can plot. Doing this for many values of t will then give us a sketch of what the solution will be doing in the phase plane. A sketch of a particular solution in the phase plane is called the trajectory of the solution.
The coordinate plane is organized around two axes: the x-axis running horizontally, and the y-axis running vertically. The position of a point on the plane is described by two numbers that measure the distance from the point to these two reference lines. See Coordinates of a point. 2. Axis of symmetry. This is a line about which a shape is symmetrical.