a) As retas são concorrentes
b) As retas são perpendiculares
Para verificar se as retas são paralelas, concorrentes ou
perpendiculares, devemos comparar seus coeficientes angulares.
[tex]a) r1: 3x + y + 3 = 0\\\\ y = -3x - 3\\\\ mr1 = -3\\\\ r2: x + y + 3 = 0\\\\ y = -x - 3\\\\ mr2 = -1\\\\ mr1\ \neq mr2\ Retas\ concorrentes[/tex]
[tex]b) r1: x - y + 3 = 0\\\\ -y = -x - 3\ (-1)\\\\ y = x + 3\\\\ mr1 = 1\\\\ r2: x + y + 4 = 0\\\\ y = -x - 4\\\\ mr2 = -1\\\\ mr1.mr2 = 1.-1 = -1 \ Retas\ perpendiculares.\\\\[/tex]
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a) As retas são concorrentes
b) As retas são perpendiculares
Para verificar se as retas são paralelas, concorrentes ou
perpendiculares, devemos comparar seus coeficientes angulares.
[tex]a) r1: 3x + y + 3 = 0\\\\ y = -3x - 3\\\\ mr1 = -3\\\\ r2: x + y + 3 = 0\\\\ y = -x - 3\\\\ mr2 = -1\\\\ mr1\ \neq mr2\ Retas\ concorrentes[/tex]
[tex]b) r1: x - y + 3 = 0\\\\ -y = -x - 3\ (-1)\\\\ y = x + 3\\\\ mr1 = 1\\\\ r2: x + y + 4 = 0\\\\ y = -x - 4\\\\ mr2 = -1\\\\ mr1.mr2 = 1.-1 = -1 \ Retas\ perpendiculares.\\\\[/tex]
Veja mais em:
https://brainly.com.br/tarefa/21889204
https://brainly.com.br/tarefa/46886269