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| 1. |
Prove that the line through the point ( x 1 , y 1 ) and parallel to the line A x + B y + C = 0 is A ( x –x 1 ) + B ( y – y 1 ) = 0. |
| Answer» Prove that the line through the point ( x 1 , y 1 ) and parallel to the line A x + B y + C = 0 is A ( x –x 1 ) + B ( y – y 1 ) = 0. | |