[tex]y = mx + b \\ \\ simplifying \: the \: given \: equation \\ \\ \\ \\ subtract \: 7 \: from \: \\ both \: side \: of \\ \: the \: equation \: to \: remove \: 7 \: \\ from \: the \: other \: side \: of \: the \: equation \\ \\ y + 7 - 7 = x - 2 - 7 \\ \\ y = x - 9[/tex]
[tex]simplified \: equation \\ \\ y = x - 9 \\ \\ m = slope \\ \\ slope \: intercept \: form \: of \: a \: line \\ y = mx + b\\ therefore \\ \\ by \: m = 1[/tex]
