k is proportinal a to a parallel plan if only if

example u=(3,-k)

note is -K no k

well the method armenta benitez is

"only use the first x or x_i

of the unique point given"

example v=(-2,4) in this case is m1=-2-------star

so now for parallelism

we have

m=y/x right so is in u =-k/3 so is equal at the term of armenta-benitez

"only use the first x or x_i

of the unique point given" -2 by star

m=-k/3=the first x or x_i

of the unique point given" -2 by star in this case

m1=-k/3=-2....

-k=6

a....

k=6

tara¡¡

q.e.d.