Resposta :

MATHSPHIS
[tex]\boxed{m=\frac{\Delta y}{\Delta x}=\frac{y_B-y_A}{x_B-x_A}=\frac{2-4}{3-(-1)}=\frac{-2}{4}=-\frac{1}{2}}[/tex]
[tex] a=\frac{2-4}{3-(-1)}=\frac{-2}{4}=-\frac{1}{2} [/tex]

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