find the equation of straight lines which pass through (6,7) and making an angle 45degree with line x+y+3=0

find the equation of straight lines which pass through (6,7) and making an angle 45degree with line x+y+3=0m

 it is the perfect answer for 3rd sub question 

2:3 and 4:6

1x1!+2x2!+…+nxn! = (n+1)! +1

5 nom ber questions

1. Physics and maths ncert Hindi me

|x 2 2

2 x 2

2 2 x| =0

|x 2 2

2 x 2

2 2 x| =0