(5, 4), (-3, k) എന്നീ രണ്ട് ബിന്ദുക്കൾ ചേരുന്ന രേഖ kx - y + 11 = 0 എന്ന രേഖയ്ക്ക് സമാന്തരമാണെങ്കിൽ, 'k' യുടെ മൂല്യം എന്താണ്?

  1. 4/9
  2. 5/7
  3. 2/3
  4. 7/11

Answer (Detailed Solution Below)

Option 1 : 4/9
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രണ്ട് ബിന്ദുക്കൾ ചേരുന്ന രേഖയുടെ സമവാക്യം:

\(\left( {y - 4} \right) = \frac{{\left( {k - 4} \right)}}{{ - 3 - 5}} \times \left( {x - 5} \right)\)

മുകളിലെ രേഖയുടെ ചെരിവ് = \(m1 = \frac{{4 - k}}{8}\)

മറ്റൊരു രേഖ:

kx – y + 11 = 0

y = kx + 11

മുകളിലെ രേഖയുടെ ചെരിവ്  = k

രണ്ട് രേഖകളും സമാന്തരം ആണ് 

m1 = m2

(4 – k)/8 = k

4 – k = 8k

4 = 9k

k = 4/9

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