Please wait...
1800-212-7858 (Toll Free)
9:00am - 8:00pm IST all days

or

Thanks, You will receive a call shortly.
Customer Support

You are very important to us

For any content/service related issues please contact on this toll free number

022-62211530

Mon to Sat - 11 AM to 8 PM

Home / Doubts and Solutions/CBSE/Class 10/Mathematics

If the points A(7, -2), B(5, 1) and C(3, k) are collinear, then find the value of k.

Asked by Topperlearning User 24th November 2013, 5:21 AM
Answered by Expert
Answer:

If the points A, B and C are collinear, then the area of triangle ABC = 0.

[7(1-k)+5(k+2)+3(-2-1)] = 0

7-7k+5k+10-9=0

-2k+8=0

k=4

Thus, the points are collinear for k=4.

Answered by Expert 24th November 2013, 7:21 AM
Rate this answer
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

You have rated this answer /10

Report an issue
Previous Question
Next Question
Your answer has been posted successfully!

Free related questions

In the figure a tangent and a line segment PBA is drawn to a circle with centre O. If OL is perpendicular to AB, prove that PA*PB=PT^2
15th February 2016, 12:11 PM
The height of a cone is 40cm. A small cone is cut off at the top by a plane parallel to its base. if the volume of the small cone is 1/64 of the volume of the given cone, at what height above the base is the section made?
15th February 2016, 11:51 AM
In fig. APB and AQO are semicircles, and AO = OB. If the perimeter of the figure is 40 cm, find the area of the shaded region.
15th February 2016, 11:17 AM
If the middle of a rectangular field 30 m x 20 m , a well of 7 m diameter and 10 m deep is dug. The earth so removed is evenly spread over the remaining part of the field . Find the height through which level of field is raised.
16th February 2016, 11:03 AM
given ; A and B trisect the side EF of  RIGHT triangle DEF prove that 8 D B squared space equals space 3 D F squared space plus space 5 D A squared. Angle DEF=90 degrees and E-A-B-F of side EF .
16th February 2016, 6:06 PM
RELATED STUDY RESOURCES :
CBSE Class-10 QUESTION ANSWERS

Chat with us on WhatsApp