ICSE Class 10 Mathematics Question 24 of 49

Multiple-Choice Questions — Question 24

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Question 24

Which of the following lines cut the positive x-axis and positive y-axis at equal distances form the origin?

  1. 3x + 3y = 6

  2. 5x + 10y = 10

  3. -x + y = 1

  4. 10x + 5y = 5

Answer

Substituting x = 0 in first equation,

⇒ 3(0) + 3y = 6

⇒ 3y = 6

⇒ y = 63\dfrac{6}{3}

⇒ y = 2.

The line touches y-axis at point (0, 2).

Substituting y = 0 in first equation,

⇒ 3x + 3(0) = 6

⇒ 3x = 6

⇒ x = 63\dfrac{6}{3}

⇒ x = 2.

The line touches y-axis at point (2, 0).

∴ Line 3x + 3y = 6 cuts positive x-axis and positive y-axis at equal distance i.e. 2 units form the origin.

Hence, Option 1 is the correct option.