A(-2,3) dan sejajar garis y=-×-5;

y = -x - 5

m = -1

sejajar, maka :
m1 = m2 = -1

melewati garis A(-2, 3)
(y - y1) = m(x - x1)
(y - 3) = -1(x + 2)
y - 3 = -x - 2
y = -x -2 + 3
y = -x + 1