Distance and displacement - properties

A bird is flying up in a straight line. At $t=0$t, equals, 0, it is at point $\text A$start text, A, end text. After some time, it was observed at point $\text B$start text, B, end text. Point $\text B$start text, B, end text is located $x=10\ \text m$x, equals, 10, space, start text, m, end text from point $\text A$start text, A, end text.