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Determine whether the given points are c...

Determine whether the given points are collinear or not:
`P(1,2),Q(2,8/5),R(3,6/5)`

Text Solution

Verified by Experts

Slope of line `PQ=(8/5-2)/(2-1)`
`=(((8-10)/5))/1`
`(-2)/5`
Slope of line `QR=(6/5-8/5)/(3-2)`
`=(((6-8)/5))/1`
`=(-2)/5`
`:.` slope of line `PQ=` slope of line QR and Q is the common point.
`:.` Points P,Q, and R are collinear.
Points `P(1,2),Q(2,8/5)` and `R(3,6/5)` are collinear.
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