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Question -

Find the point of intersection of the following pairs of lines:
(i) 2x – y + 3 = 0 and x + y – 5 = 0
(ii) bx + ay = ab and ax + by = ab



Answer -

(i) 2x – y + 3 = 0 and x +y – 5 = 0

Given:

The equations of thelines are as follows:

2x − y + 3 = 0 … (1)

x + y − 5 = 0 … (2)

Let us find the pointof intersection of pair of lines.

By solving (1) and (2)using cross – multiplication method, we get

x = 2/3 and y = 13/3

 The point ofintersection is (2/3, 13/3)

(ii) bx + ay = ab and ax +by = ab

Given:

The equations of thelines are as follows:

bx + ay − ab = 0… (1)

ax + by = ab  ax + by − ab = 0 … (2)

Let us find the pointof intersection of pair of lines.

By solving (1) and (2)using cross – multiplication method, we get

 The point ofintersection is (ab/a+b, ab/a+b)

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