Respuesta :

So the gradient for line A is 4/7 since rise/run is 4/7
This means line B (which is said to be perpendicular) will be the reciprocal of line A and so the reciprocal of 4/7 is 7/4 but you also have to change the sign so the answer would be:

-7/4
kaileyr172001

Answer:

the answer would be:

-7/4

Good luck! <3