Question

Dada a reta r:x=1+t, y=3-t, z=-4+2t, determinar o ponto r tal que a ordenada seja 6

Answer 1

$x = 1 + t \\ y = 3 - t \\ z = - 4 + 2t \\ \\ 6 = 3 - t \: \: \: \: \: \: \: \\ t = - 3 \\ \\ x = 1 - 3 = - 2 \\ z = - 4 - 6 = - 10$
P( -2,6,-10)