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Q.

Graphically, the following pair of linear equations represent two lines which are

6𝑥 − 3𝑦 + 10 = 0

2𝑥 − 𝑦 + 9 = 0

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a

 Intersecting at exactly one point

b

Intersecting at exactly two points

c

Coincident

d

Parallel

answer is D.

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Detailed Solution

The given equations are

6𝑥 − 3𝑦 + 10 = 0

2𝑥 − 𝑦 + 9 = 0

Dividing both sides of eq(1) by 3, we get

2x - y + 10/3 =0

Table for above equation

x0-9/2
y90

table for equation 2x - y + 9 = 0

x0-5/3
y10/30

So, the graph of these equations is:

Question Image

The graph clearly shows that the two lines are parallel to each other. Hence, the correct option is (d) parallel.

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