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.

Researcher Invents New Graphing Method: 'Diamond Graph' Corrects Long-standing Errors Of 3-D Bar Graphs Date: August 13, 2003 Source: Johns Hopkins University Bloomberg School Of Public Health Summary ...

To help draw a straight line graph from its equation, fill in a table of 𝑥 and 𝑦 values. Plot the pairs of values as coordinates and join to make a line. Make sure you are confident with ...