Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

The points (p,2),(-3,4) and (-7,1) are collinear then find the value of P

can you tell.. the answer
yes..just wait a little while
hope you understood


If the 3 points are collinear then the area formed by the triangle of the given points shall be 0
A(p,2)    B(-3,4)   C(-7,1)

So, Area of ABC =1/2 [x1 (y2 - y3) + x2(y3 - y1) + x3 (y1 - y2)] = 0

substituting the values,

=> 1/2{p (2) -3 (-1) -7 (-2)} =0

=> 2p +3 +14 =0
=> 2p = -17
=> p =-17/2

0 0 0

This Is a Certified Answer

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
If 3 points are collinear then Ιx₁(y₂-y₃)+x₂(y₃-y₁)+x₃(y₁-y₂)Ι=0

Hope this helps you ............... :)
1 5 1
then why was it reported by someone else why do they do so
i don't understand
i think he reported urs bcoz u missed to keep 1/2 in the formula. but although u keep the result will be same :)
oh may be
yaah :)
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts