Question

Verifique quais dos pontos abaixo pertencem à reta da equação y = x + 2: * A (3, 5) B (2, 5) C (3, 4)

Answer 1

$\boxed{\begin{array}{l}\sf y=x+2\\\sf r: y-x=2.\\\sf A(3,5):~~5-3=2\longrightarrow A\in r\\\sf B(5,2):~2-5=-3\ne2\longrightarrow B\not\in r\\\sf C(4,3):~3-4=-1\ne2\longrightarrow C\not\in r\\\rm somente~ o~ponto~A(3,5)~pertence~\grave a~reta.\end{array}}$