noun. 1  a type of structure of an organism or part of an organism in which a vertical cut through the axis in any of two or more planes produces two halves that are mirror images of each other.2  Compare bilateral symmetry. Trends. 2  a type of structure of an organism or part of an organism in which a vertical cut through the axis in any of two or more planes produces two halves that are mirror images of each other.
There is a standard method for graphing the independent and dependent variable. The x-axis is the independent variable, while the y-axis is the dependent variable. You can use the DRY MIX acronym to help remember how to graph variables: DRY MIX.
Some guidelines. --When dealing with a relation, the x and y variables have particular roles to play. axis.) Often, x is a quantity which we can change or have control over. see how y reacts to different values of x. variable, and y the dependent or response variable. that x is used to predict y.