First, let'scalculate the slope:
[tex]m=\frac{-4-3}{-3-4}\rightarrow m=\frac{-7}{-7}\rightarrow m=1[/tex]Therefore, we know that our equation will have the form:
[tex]y=x+b[/tex]Let's plug in point (4,3) and solve for b,
[tex]\begin{gathered} y=x+b \\ \rightarrow3=4+b \\ \rightarrow3-4=b \\ \Rightarrow b=-1 \end{gathered}[/tex]Therefore, the equation of the line in the slope intercept form is:
[tex]y=x-1[/tex]