Note: Either public, protected or private keyword is used in place of access_specifier term used in the above code. Example of public, protected and private inheritance in C++
The graph of a relation of the form y = 5 is a line parallel to the x-axis because the y value never changes. A line parallel to the x-axis is called a horizontal line. The graph of a relation of the form x = 5 is a line parallel to the y-axis because the x value never changes. A line parallel to the y-axis is called a vertical line. Plot the graph of each of the following relations: horizontal line, vertical line.
Line graphs can show more detail than bar charts. They should be used when the horizontal axis represents a continuous quantity such as time spent weeding or quantity of fertiliser applied. When the horizontal axis is a qualitative factor-such as ethnic group, crop variety or source of protein-bar charts are natural.