Pake cara yah no 8 please

melewati titik (10, 60) dan (40, 20)

maka
x1 = 10
y1 = 60
x2 = 40
y2 = 20

m = (y2 - y1) / (x2 -x1)
m = (20 - 60) / (40 - 10)
m = (-40) / 30
m = - 4/3

jawaban A