Question

determine o coeficiente angular da reta que passa pelos pontos A(-1,4) e B(3,2).

Answer 1

$\boxed{m=\frac{\Delta y}{\Delta x}=\frac{y_B-y_A}{x_B-x_A}=\frac{2-4}{3-(-1)}=\frac{-2}{4}=-\frac{1}{2}}$

Answer 2

$a=\frac{2-4}{3-(-1)}=\frac{-2}{4}=-\frac{1}{2}$

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