The slope equation is [tex] \frac{y^2-y^1}{x^2-x^1} [/tex]
In (0,4) and (2,6), 4 and 6 are y values, while 0 and 2 are x values
So y^2 would be 6 and y^1 would be 4
x^2 would be 2 and x^1 would be 0
Plug it in the equation would be [tex] \frac{6-4}{2-0} [/tex]
So the numerator would be 2