Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) The variable plane `(2lambda+1)x+(3-lambda)y+z=4,(lambda inR)` always contains the line - Sarthaks eConnect

The variable plane `(2lambda+1)x+(3-lambda)y+z=4,(lambda in R)` always contains the line:

`x/0=y/0=(z+4)/1`

`x/1=y/2=z/-3`

`x/1=y/2=(z-4)/-7`

None of these