Question

Calcule o que se pede abaixo:

Answer 1

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https://brainly.com.br/tarefa/31917738?utm_source=android&utm_medium=share&utm_campaign=question

A reta passa pelos pontos A(-3-4) e B(3,0)

EGR

$\begin{vmatrix}-3&4&1\\3&0&1\\x&y&1\end{vmatrix}=0$

$\sf{-3(0-y)+4(3-x)+1(3y-0)=0}\\\sf{3y+12-4x+3y=0}\\\sf{-4x+6y+12=0\div(-2)}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{2x-3y-6=0}}}}}$

ERR:

$\sf{2x-3y-6=0}\\\sf{3y=2x-6}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{y=\dfrac{2x-6}{3}}}}}}$

ESR:

$\sf{2x-3y-6=0\implies 2x-3y=6}\\\sf{\dfrac{2x}{6}-\dfrac{3y}{6}=\dfrac{6}{6}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{\dfrac{x}{3}-\dfrac{y}{2}=1}}}}}$