![how to determine which lines overlap origin graphing how to determine which lines overlap origin graphing](https://media.geeksforgeeks.org/wp-content/uploads/point1.png)
![how to determine which lines overlap origin graphing how to determine which lines overlap origin graphing](http://lowrank.net/gnuplot/fig/sample5.14.png)
Substitute x 0 and y 0 into the inequality and determine if the resulting statement is true or false. The graph D represents the function that passes the vertical line test. Graph 4 doesn’t pass the vertical line test. Graph 3 doesn’t pass the vertical line test. Note: You can use any point not on the line, but the origin is Often the nicest because it minimizes the computation in evaluating the inequality. Graph 2 does pass the vertical line test.
![how to determine which lines overlap origin graphing how to determine which lines overlap origin graphing](https://miro.medium.com/max/1838/1*nBJdQGW37x8QPmhTp4YYdg.png)
In geometry, the notion of line or straight line was introduced by ancient mathematicians to represent straight objects (i.e., having no curvature) with negligible width and depth. Since the line does not pass through the origin we can use it again.