1.

Two straight paths are represented by the equations x – 3y = 2 and –2x + 6y = 5.Check whether the paths cross each other or not.

Answer»

Given linear equations are

x – 3y – 2 = 0 …(i)

-2x + 6y – 5 = 0 …(ii)

On comparing with ax + by c=0,

We get

a1 =1, b1 =-3, c1 =- 2;

a2 = -2, b2 =6, c2 =- 5;

a1/a2 = – ½

b1/b2 = – 3/6 = – ½

c1/c2 = 2/5

i.e., a1/a2 = b1/b2 ≠ c1/c2 [parallel lines]

Hence, two straight paths represented by the given equations never cross each other, because they are parallel to each other.



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