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JEE Main 201912 JanuaryEvening Shift
Exam
JEE Main
Year
2019
Date
12 January
Shift
Evening Shift
Subject
Mathematics
Chapter
Straight Lines

JEE Main 2019 · 12 January · Evening Shift · Mathematics · Straight Lines

If a straight line passing through the point P(- 3, 4) is such that...

If a straight line passing through the point P(−3,4)P\left(- 3, 4\right) is such that its intercepted portion between the coordinate axes is bisected at PP, then its equation is :If a straight line passing through the point P(- 3, 4) is such that its intercepted portion between the coordinate axes

Options

  1. A4x+3y=04x + 3y = 0
  2. B4x−3y+24=04x - 3y + 24 = 0
  3. C3x−4y+25=03x - 4y + 25 = 0
  4. Dx−y+7=0x - y + 7 = 0

Correct answer

B. 4x−3y+24=04x - 3y + 24 = 0

Step-by-step solution

If a straight line passing through the point P(- 3, 4) is such that its intercepted portion between the coordinate axes

Let the line passing through (−3,4)\left(- 3, 4\right) intersect the coordinate axes at A&B.</p><p>Bymid−pointformula,co−ordinatesof.</p><p>By mid-point formula, co-ordinates ofP\left(\dfrac{\alpha + 0}{2}, \dfrac{0 + \beta}{2}\right).</p><p>Comparingwithgivenco−ordinatevalues,weget</p><p>.</p><p>Comparing with given co-ordinate values, we get</p><p>\dfrac{\alpha + 0}{2} = - 3 ⇒ \alpha = - 6</p><p>and</p><p>and\dfrac{\beta + 0}{2} = 4 ⇒ \beta = 8</p><p>Hence,equationoflineis</p><p>Hence, equation of line is\dfrac{x}{- 6} + \dfrac{y}{8} = 1</p><p></p><p>⇒ 4x - 3y + 24 = 0

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