Kindly Consider the following

Show that the points (a+5,a−4) , (a−2,a+3) , and (a,a) do not lie on a straight line for any value of a .

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a year ago

This is a Short Answer Type Questions as classified in NCERT Exemplar
Sol:

If  the  given  points  lie  on  a  straight  line,  then  the  area  of  the  triangle  formed  by  joining  the points  pairwise  is  zero. S 0 ,           | a + 5 a − 4 1 a − 2 a + 3 1 a a 1 | R 1 → R 1 − R 2 ,   R 2 → R 2 − R 3 ⇒                                                       | 7 − 7 0 − 2 3 0 a a 1 | E x p a n d i n g     a l o n g     C 3 ⇒                                                         1 . | 7 − 7 − 2 3 | = 2 1 − 1 4 = 7 u n i t s As  7≠0.  Hence,  the  three  points  do  not  lie  on  a  straight  line  for  any  value  of  a.

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Maths NCERT Exemplar Solutions Class 12th Chapter Four 2025

Maths NCERT Exemplar Solutions Class 12th Chapter Four 2025

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