Hello Help in Maths.

[DoYouLikeMyPooPoo]

Hello Friends,

Can anyone help me in the last question of the Maths Paper 1.
The one related to Lines.

Thanks in advance.

 

[olevel_prep]

find slope of line ab whose point were given then multiple it with line l slope to get -1 that show it perpendicular, then put midpoint of ab in l to show that line l past through it then we are done