MCQ
The line $(3x - y + 5) + \lambda (2x - 3y - 4) = 0$ will be parallel to $y$-axis, if $\lambda$ =
  • A
    $\frac{1}{3}$
  • $\frac{{ - 1}}{3}$
  • C
    $\frac{3}{2}$
  • D
    $\frac{{ - 3}}{2}$

Answer

Correct option: B.
$\frac{{ - 1}}{3}$
b
(b) The given line can be written in this form $(3 + 2\lambda )x + ( - 1 - 3\lambda )y + (5 - 4\lambda ) = 0$

It is will be parallel to $y$-axis, if

$ - 1 - 3\lambda = 0 $

$\Rightarrow \,\lambda = - \frac{1}{3}$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Which of the following is(are) $NOT$ the square of a $3 \times 3$ matrix with real entries ?

$[A]$ $\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & -1\end{array}\right]$

$[B]$ $\left[\begin{array}{ccc}-1 & 0 & 0 \\ 0 & -1 & 0 \\ 0 & 0 & -1\end{array}\right]$

$[C]$ $\left[\begin{array}{lll}1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1\end{array}\right]$

$[D]$ $\left[\begin{array}{ccc}1 & 0 & 0 \\ 0 & -1 & 0 \\ 0 & 0 & -1\end{array}\right]$

The solution of $y\,dx - xdy + 3{x^2}{y^2}{e^{{x^3}}}dx = 0$ is
Let $\mathrm{X}$ be a random variable with distribution.

$\mathrm{x}$ $-2$ $-1$ $3$ $4$ $6$
$\mathrm{P}(\mathrm{X}=\mathrm{x})$ $\frac{1}{5}$ $\mathrm{a}$ $\frac{1}{3}$ $\frac{1}{5}$ $\mathrm{~b}$

If the mean of $X$ is $2.3$ and variance of $X$ is $\sigma^{2}$, then $100 \sigma^{2}$ is equal to :

If ${S_1},\;{S_2},\;{S_3},...........{S_m}$ are the sums of $n$ terms of $m$ $A.P.'s$ whose first terms are $1,\;2,\;3,\;...............,m$ and common differences are $1,\;3,\;5,\;...........2m - 1$ respectively, then ${S_1} + {S_2} + {S_3} + .......{S_m} = $
The number of solution of ${\log _2}(x + 5) = 6 - x$ is
A number is chosen at random from first ten natural numbers. The probability that number is odd and perfect square is
If $S=\{z \in C:|z-i|=|z+i|=|z-1|\}$, then, $n(S)$ is:
Let $z=x+i y$ be a complex number where $x$ and $y$ are integers. Then the area of the rectangle whose vertices are the roots of the equation $z \bar{z}^3+\bar{z} z^3=350$ is
The mean age of a combined group of men and women is $30$ years. If the means of the age of men and women are respectively $32$ and $27$, then the percentage of women in the group is
The number of distinct solutions of $\sec \theta \,\, + \,\,\tan \theta \, = \,\sqrt 3 \,,\,0\,\, \leqslant \,\,\theta \,\, \leqslant \,\,2\pi$