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Question

For different values of $m$, the equation $4y = mx-m+ 2$ represents

This question was previously asked in
NDA 2 2025 GAT Question Paper (14-Sep-2025)
The correct answer is

concurrent lines 

The given equation is \(4y = mx - m + 2\). We need to analyze what this equation represents for different values of \(m\).

First, let's rearrange the equation to a more standard form:

The given equation can be rearranged as \(4y = mx - m + 2\), which can be rewritten as:

\(y = \frac{m}{4}x - \frac{m}{4} + \frac{1}{2}\)

This is now in the form \(y = mx + c\), which is the equation of a straight line where \(m\) is the slope and \(c\) is the y-intercept.

Now, let's analyze the different possibilities based on varying \(m\):

  1. Concurrent Lines: Lines are said to be concurrent if they all pass through a common point. For different values of \(m\), the lines should pass through a single point for them to be concurrent. Substituting \(x = 0\) to find the intercept, we have: \(y = -\frac{m}{4} + \frac{1}{2}\). This point changes with \(m\) unless \(x\) and\)
  2. Parallel Lines: For lines to be parallel, they should have the same slope, which would mean the slope coefficient \(\left(\frac{m}{4}\right)\) is constant across different lines, which implies \(m\) must be the same, contrary to varying \(m\).
  3. Lines at a Fixed Distance from the Origin: For the lines to be at a fixed distance, no change in intercept can occur as \(m\) varies, which does not hold here.
  4. The Same Line: This would mean that for every \(m\), the equation represents the exact same line, which is not possible as both slope and intercept change with different \(m\).

Considering the above, as each line derived from varying \(m\) can potentially pass through the same point for a specific condition, the correct answer is "concurrent lines".

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Similar Questions

  1. What are the direction ratios of the line?
  2. What is the point of intersection of L and P?
  3. What is the equation to the straight line passing through the point \((-\sin\theta, \cos\theta)\) and perpendicular to the line \(x\cos\theta + y\sin\theta = 9\)?
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Important Questions from Equation in a Line

  1. What are the direction ratios of the line?
  2. What is the point of intersection of L and P?
  3. What is the equation to the straight line passing through the point \((-\sin\theta, \cos\theta)\) and perpendicular to the line \(x\cos\theta + y\sin\theta = 9\)?
  4. Two points $P$ and $Q$ lie on line $y = 2x + 3$. These two points $P$ and $Q$ are at a distance $2$ units from another point $R(1, 5)$. What are the coordinates of the points $P$ and $Q$?
  5. If two sides of a square lie on the lines $2x+y-3=0$ and $4x + 2y + 5 = 0$, then what is the area of the square in square units ?
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