JEE MATHEMATICS MCQ: STRAIGHT LINES

1 Easy

1 of 1

Application +4 | -1

A\left( { - 5,0} \right)

and

B\left( {3,0} \right)

are two of the vertices of a triangle ABC. Its area is 20 square cms. The vertex C lies on the line

x - y = 2.

. The coordinates of C are

View answer and explanation

Correct option: D

\left( { - 3, - 5} \right)

\left( {7,5} \right)

Option D (

\left( { - 3, - 5} \right)

\left( {7,5} \right)

) is correct because these coordinates satisfy both the area condition and the line equation.

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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