Question

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Answer 1

Answer:

Slope of the line joining two points (−4,5) and (α,β) must be equal to  

β-5 / α+4  =-4/3

 

4α+3β=−1……(1)

And (α,β) also satisfy the give equation of line.

⇒3α−4β=18……(2)

From 1 and 2

28(α+β)−7β=−7

3(α+β)−7β=18

⇒α+β=−1