JEE MATHEMATICS MCQ: STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

{x_1},\;{x_2},\;{x_3}

as well as

{y_1},\;{y_2},{y_3}\;

are in GP with the same common ratio, then the points

\left( {{x_1},\;{y_1}} \right),\left( {{x_2},\;{y_2}} \right)

and

\left( {{x_3},\;{y_3}} \right)

View answer and explanation

Correct option: D

Lie on a straight line

Option D (Lie on a straight line) is correct because the ratio of the y-coordinates to the x-coordinates is constant, indicating collinearity.

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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