Question

Calcule o valor de m para que as retas a seguir sejam coplanares:

r: {x = -1} e s: {y = 4x - m}
{y = 3} {z = x}

resposta m= -7

Answer 1

aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Answer 2

3 = 4 . x - m 
3 = 4 . (-1) - m
3 = -4 - m
4 +3 = -m
7 = -m 
-7 = m  o que é o mesmo que m = -7