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Solve 80th question according to me its answer would be (b)

Shrimad , 7 Years ago
Grade 12th pass
anser 1 Answers
Arun

Last Activity: 7 Years ago

For Parabola
 
2y dy/dx = 4
y dy/dx = 2
 
but dy/dx = 2 frm line
 
hence
y = 1
 
now
1^2 = 4x +5
4x = –4
x = – 1
 
hence equation of line
y –1 = 2 (x+1)
y = 2x+3
 
option A is correct

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