Question

a equação da reta que passa pelos pontos (1,1) e (-1,-1)

Answer 1

A(1,1) e B(-1,-1)

M = ( yb - ya ) / ( xb - xa ) = ( -1 - 1 ) / ( -1 -1 ) = -2/-2 = 1

y - ya = m ( x - xa )

y - 1 = 1 ( x - 1 )

y = x - 1 + 1

x - y = 0