Question

Dados os pontos A(n.5) e B(1,-2) e o coeficiente angular m= -2,0 valor de r

Answer 1

x1 = n, y1 = 5, x2 = 1, y2 = -2

m = y2 - y1 / x2 - x1

-2 =  -2 - 5 / 1 - n

-2 = -7 / 1-n

-2 . (-7) = 1-n

14 = 1 - n

-n = 14 -1

n = -13