Question

o coeficiente regular da reta (r) é -1 sabe se que e ela passa pelos pontos A= (5, 0) e B= (0, k)

Answer 1

m => Coeficiente angular

$m= \dfrac{y_B-y_A}{x_B-x_A} \\\\\\m= \dfrac{k-0}{0-5}\\\\\\m= -\dfrac{k}{5}\\\\\\m=-1\\\\\\-1= -\dfrac{k}{5} \\\\\\k=5$