Classify the following pairs of lines as coincident, parallel or intersecting:
`x+2y-3=0`and`-3x-6y+9=0`
`x+2y+1=0`and`2x-4y+3=0`
`3x-2y+5=0`and`2x+y-9=0`

Explanation

(i) `x+2 y-3=0` and `-3 x-6 y+9=0` `x+2 y-3=0`


Coincident.




(ii) `x+2 y+1=0` and `2 x-4 y+3=0`

slope `=-1 / 2

quad` slope `=1 / 2`
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