Find the magnitude of the vector

= (-3, 4).

we cant find the magnitude with just two coordinations. if that equation is y=mx ... and we can think that these is also a cordintion (0,0) ... because line cross the middle of the chart. then we can use the equation m = y difference/x difference

m = (4-0) (-3-0)

m=4 / (-3)

m=-1.333