Anonymous

so find <a , b , c > so that - a - 5b + c = 0 { dot product must be zero }......a = -1 , b = 1 , c = 4..... line : r = < -5 , - 2 , -1 > + t < -1, - 1 , 4 >....you could also use < 1 , 0 , 1 >...< 0 , - 1 , 5 >...