st-line

Question: The point $P\,(a,\ b)$ lies on the straight line $3x+2y=13$ and the point $Q\ (b,\ a)$ lies on the straight line $4x-y=5,$ then the equation of line PQ is

1) $x-y=5$

2) $x+y=5$

3) $x+y=-\ 5$

4) $x-y=-\ 5$

Solution:

Explanation: No Explanation

Slope of line Equation of line in different forms

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