Respuesta :
(x,y)
y is vertical change
compare
(2.7,3.5) and (1.6,2.4)
compare VERTICAL change
3.5 to 2.4
3.5-2.4=1.1
it changed 1.1, but it went down so
the veritcal change is -1.1
y is vertical change
compare
(2.7,3.5) and (1.6,2.4)
compare VERTICAL change
3.5 to 2.4
3.5-2.4=1.1
it changed 1.1, but it went down so
the veritcal change is -1.1