Question

Equação da reta que passa pelos pontos (2,-3) e (8,1) é:
a) 2x -3y - 13=0
b) -2×-3y +13=0
c) 3x-2y+13=0
d)2x-3y+13=0
e) 2x+3y-13=0

Answer 1

A(2,-3) e B(8,1)

m = ( yb - ya ) / ( xb - xa ) = ( 1 + 3 ) / ( 8 - 2 ) = 4/6... 2/3

y - ya = m ( x - xa )

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

3y + 9 = 2x - 4

2x - 3y - 13 = 0