# When does the graph pass through the origin?

Whenever we are having our linear equation with no constant term , For example :

*y*= 2

*x*,

*y +*3

*x*= 0

Then we get graph of our linear equation passing through origin :

As , we form table for different values of

*x*and

*y*both equation , As :

y = 2x |
y + 3x = 0 |
||

x |
y |
x |
y |

0 | 0 | 0 | 0 |

1 | 2 | 1 | - 3 |

2 | 4 | 2 | - 6 |

- 1 | - 2 | -1 | 3 |

- 2 | - 4 | - 2 | 6 |

Now we draw these points on

*x*-

*y*plane and get our graph for both equations , As :

From graph we can see both equation are passing through origin .

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