Question

The coordinates of C are -5,0 Why

Answer 1

Answer:

Correct option is

C

x−2y=0

Given that D is the mid point of BC

⇒D=(

2

0+2

,

2

0+2

)

⇒D=(1,1)

Slope of line joining (x

1

,y

1

),(x

2

,y

2

) is given by m=

x

2

−x

1

y

2

−y

1

Let Slope of AD be m

1

⇒m=

1+1

1−5

=

2

−4

=−2

Let the slope of required line be m

2

Required line is perpendicular to AD . Therefore, m

1

m

2

=−1

⇒(−2)m

2

=−1

⇒m

2

=

2

1

This line passes through B

⇒y−y

1

=m(x−x

1

)

⇒y−0=

2

1

(x−0)

⇒y=

2

1

x

⇒x−2y=0

Hence the required line is ⇒x−2y=0

Step-by-step explanation:

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