Question

Find the value of a, for which point P (

ୟ

ଷ

, 2) is the mid-point of the line segment joining the

points Q(-5,4) and R(-1,0).

​

Answer 1

Answer:

Coordinates of midpoint are (x,y)

x=

2

(x

1

+x

2

)

y=

2

(y

1

+y

2

)

According to the question:

x=

2

−5−1

=−3

⇒

3

a

=−3

⇒a=−9

y=

2

(4+0)

=2

coordinate of mid point =(−3,2)

so, a=−9