Question

14. Five friends A, B, C and D planned to visit a mall topurchase few things on t
heir own. They found that it isimpossible to purchase all the things required in shortperiod of time and so they decided to split in four cornersof the quadrilateral mall to buy their products. They canthen meet at a point and reach back home.

(i) What are the coordinates of A & B ?( a)A(-3,1), B(-1,4)
(b A(3, 1), B(1, - 4);
c)A(-3,-1), B(-1,4)
(d) A(3, 1) , B(- 1, 4)
)

If, B, C and D become collinear, then which is true?
(a) BC = AC + CD
(b) CD = AB + BC
(c) BC = CD + BD
(d) All of the above

(iv) What is the distance from A to B?
(a) sqrt(7)
( b) sqrt 5
(c) sqrt(12)
(d) sqrt(13)

What is the distance of point A from the origin?
(a) sqrt(7)
(b) sqrt 1 0
(c) sqrt(12)
(d) sqrt(13)

sqrt means square root​

Answer 1

Answer:

1 a

2 d

3 d

4 c

I guess this is the answer

Answer 2

Answer:

Step-by-step explanation:

A=(−3,α)     B=(1,α+4)

Mid point of AB is P(−1,1)

2

−3+1

​

=  

2

−2

​

=−1;  

2

α+α+4

​

=1

2α+4=2

⇒2α=−2

⇒α=−1