JEE MATHEMATICS MCQ: STRAIGHT LINES

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Analyzing +4 | -1

A B C D

is square

A \equiv(1,2), B \equiv(3,-4)

. If line

C D

passes through

(3,8)

, then mid-point of

C D

View answer and explanation

Correct option: D

\left(\frac{28}{5}, \frac{1}{5}\right)

Option D (

\left(\frac{{28}}{{5}}, \frac{{1}}{{5}}\right)

) is correct because it is the midpoint of CD, found by solving the equations of line CD and the perpendicular bisector of AB.

More Questions from STRAIGHT LINES

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x-3 y=p, a x+2 y=q

a x+y=r

\left\{ {a{t_1}{t_2},\;a\left( {{t_1} + {t_2})\} ,\{ a{t_2}{t_3},a({t_2} + {t_3}} \right)} \right\},\;\left\{ {a{t_3}{t_1},\;a\left( {{t_3} + {t_1}} \right)} \right\}

y = 2\;x + 4

6x = 3y + 5

{x^2} + {y^2} + 2xy - 8ax - 8ay - 9{a^2} = 0

(3,8)

x+3 y=7

\left( {{x^2} + 7xy + 2{y^2}} \right)\left( {y - 1} \right) = 0