Question

determine o coeficiente angular da reta que passa pelos pontos A=(-1,2) e B=(3,6)

Answer 1

M = yb - ya / xb - xa = 6 - 2 / 3 + 1 = 4/4 = 1 coe ang

y - ya = m ( x - xa )

y - 2 = 1 ( x + 1 )

y - 2 = x + 1

y = x + 3

x - y + 3 = 0

coe ang = -a/b = -1/-1 = 1

coe lin = -c/b = -3/-1 = 3