Double-click the chart's left axis to open the Format Axis side panel. Click "Axis Value" to allow manual control over the axis. Enter the number you wish to use for the axis in the field provided. To ...

The X-axis, which is the horizontal axis, on most Excel charts does not use numeric intervals like the vertical Y-axis does. The X-axis contains either strings of text or a date under each set of data ...

Plot points with coordinates where \(x\) and \(y\) are equal. Three points are sufficient, but more can be plotted. Draw a line through the plotted points. If \(x\) is positive, \(y\) is negative. If ...

Quadratic graph lines are U- or Ո-shaped, which is called a parabola. A linear graph can be drawn using only three points. A quadratic graph is a curve, so more points are plotted to support accuracy.

Forbes contributors publish independent expert analyses and insights. I help people communicate data clearly with graphs. This post is motivated by a comment on my blog post Line Charts Are Not Always ...