Let's consider a code example showing what would be allowed (or not) using different levels of inheritance: 1  class BaseClass {}; void freeStandingFunction(BaseClass* b); class DerivedProtected : protected BaseClass { DerivedProtected() { freeStandingFunction(this); // Allowed } };
Definition of Horizontal Axis. Horizontal means flat or level. Horizontal axis is the x-axis on a graph. The blue number line in the figure below is the x-axis, the horizontal axis.
1 With a chart, the y-axis is the vertical data that is typically on the right-side of the chart. 2  In computer graphics, if you wanted to draw a horizontal line the x-axis can be used to determine the start and end point of the line. 3  Drawing a two-dimensional object would require only the x-axis and y-axis.