First we must transform the equation above into an equation of the form:
y=mx+C
The value of m is actually the slope.
[tex]4x-3y=13\\ \\ 3y=4x-13\\ \\ \frac { 1 }{ 3 } \cdot 3y=\frac { 1 }{ 3 } \left( 4x-13 \right) \\ \\ y=\frac { 4 }{ 3 } x-\frac { 13 }{ 3 } [/tex]
As m=4/3, this is in fact your slope.
Answer:
4/3