When Would You Not Use A Line Graph? When comparing data sets, line graphs are only useful if the axes follow the same scales. Some experts recommend no more than 4 lines on a single graph; any more than that and it becomes difficult to interpret. How do you know when to use a line
How Do You Plot A Straight Line? Re-arrange equations into form y = mx + c. Pick 3 sensible points for x, including 0, then solve for y. Plot points on grid. Join with a straight line that goes through the y axis. Graph will cut the y axis at (0,c) and have gradient m.
What Each Variable Is Plotted Along? What each variable is plotted along? Each variable is plotted along an axis. A line graph has a vertical axis and a horizontal axis. For example, if you wanted to graph the height of a ball after you have thrown it, you would put time along the horizontal, or