# The Graph of an Equation

## Point-Plotting Method

### x-intercept:      $\left&space;(&space;x,0&space;\right&space;)$    $\rightarrow&space;\;&space;0=16-4x^{2}$

$4x^{2}=16$

$x^{2}=4$

$x=\pm&space;2$

### Since we know this is a cubic equation that falls to the left and rises to the right, and we know it is symmetric about the origin, we can use the three intercepts and easily sketch the graph of the equation.

Filed under: Functions and Their Graphs

Like this post? Subscribe to my RSS feed and get loads more!