Question

A equaçao geral da reta que passa pelos pontos P1(-2,3) e P2(1,-4)é:

Answer 1

A(-2,3) e B(1,-4)

M = ( yb - ya ) / ( xb - xa ) = ( -4 - 3 ) / ( 1 + 2 ) = -7/3

y - ya = m ( x - xa )

y - 3 = -7/3 ( x + 2 )

3y - 9 = -7x - 14

3y = -7x - 14 + 9

7x + 3y + 5 = 0