## saifoo.khan 3 years ago Question:

1. saifoo.khan

2. shubhamsrg

C and D is same thing,, and its an eqn of straight line,,so i dont really know!! :P

3. mathslover

c ...

4. saifoo.khan

Why? @mathslover

5. Mimi_x3

a

6. saifoo.khan

It's okay. @shubhamssrg :)

7. saifoo.khan

Why? @Mimi_x3

8. mathslover

one minute ... Shubham what if a=1 and b=i?

9. mathslover

Hence (d) is wrong.

10. saifoo.khan

So (c) ?

11. mathslover

Now coming to the Left options i.e. a, b and c

12. mathslover

It will take time to conclude whether I am right with C option.

13. Mimi_x3

$y = \frac{(-a-1)x}{b}$ $-a - 1 = 0 => -a = 1 => a = -1$ so (a)

14. Mimi_x3

i mean (b)

15. Mimi_x3

wait im confused

16. saifoo.khan

i entered (a) . -_-

17. mathslover

yep... u must be

18. Mimi_x3

lol it cant be a

19. saifoo.khan

WTH! Let me post another one.

20. mathslover

It is C but I need to tell the proof for that

21. Mimi_x3

its (b)

22. saifoo.khan

23. saifoo.khan

@mathslover , i entered it already..Can't go back now. Sorry.

24. Mimi_x3

its not (a) for sure!!! change it

25. saifoo.khan

I CAN'T CHANGE.. CAN'T GO BACK.

26. saifoo.khan

sOLVE ANOTHER ONE.

27. mathslover

|dw:1347366185476:dw|

28. mathslover

oh I meant same for other triangle

29. mathslover

I applied Heron's Formula here

30. saifoo.khan

FIND THE AREAAAAAAA!

31. Mimi_x3

isnt it just (1/2*a*b)*2 for that squaure? lol

32. mathslover

Is it necessary to be a square?

33. saifoo.khan

YOU GUYS ARE SLOW..

34. mathslover

Can not it be a rhombus?

35. Mimi_x3

$\left(\frac{1}{2}*8*8\right) *2$ we are not slow;

36. saifoo.khan

64?

37. Mimi_x3

maybe tho

38. Mimi_x3

dont trust me what do you think mathslover

39. saifoo.khan

@mathslover ?

40. saifoo.khan

im GOING WITHH 64.

41. Mimi_x3

no

42. saifoo.khan

THANKS ALL. MORE COMING. :D

43. mathslover

$\large{\sqrt {X^2-l6}\times8}$

44. mathslover

oops is it square for sure?

45. Mimi_x3

yes i am; i checked, a square is a quad

46. saifoo.khan

47. Mimi_x3

what does collinear mean again?

48. saifoo.khan

Seriously?

49. Mimi_x3

i got it

50. saifoo.khan

|dw:1347366792252:dw|

51. Mimi_x3

B(2,2) C(-3,1) find the equation of the line; than plug A(a,-2) to find the point

52. saifoo.khan

-18.

53. saifoo.khan

On a map drawn to a scale of 1 : 1,25,000. One triangle plot of land has the following measurements : PQ = 10cm, QR = 8cm and Calculate: The area of the plot in square km.

54. saifoo.khan

37.5