Question

Determine o valor de K para que as retas (r) x+y-3=0 e (s) kx-3y+4=0 sejam paralelas

Answer 1

r: x+y-3=0
y = -x+3
a= -1
s: kx-3y+4=0
3y= kx + 4
y= $\frac{kx}{3} + \frac{4}{3}$
$\frac{k}{3}= -1$
k =-3