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The paralelism condition for two straigh...

The paralelism condition for two straight lines one of which is speciified by the equation `ax+ by+ c=0,` the other being represented parmetrically by `x= alpha t + beta, y= gamma t + delta` is given by

A

`alphagamma-balpha=0,beta=delta=c=0`

B

`aalpha-bgamma=0,beta=delta=0`

C

`a alpha + bgamma = 0`

D

`alpha gamma = balpha = 0`

Text Solution

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The correct Answer is:
C
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