I am in my kitchen if and only if i am at home
not 100% right
La formula para sacar la pendiente:
Y2-Y1/X2-X1
Respuesta:
Y2-Y1/X2-X1= -2-(-10)/-1-(-1)
= -2+10/ -1+1= 8
R=8
Espero que te sirva
This is just about similar triangle
mn=2jl=22
mo=2lk=26
jk=2on=40