[tex]y = mx + b[/tex]
This is slope intercept form, where m is the slope and b is the y - intercept. If we compare the to our equation:
[tex]y = -27.4x + 0[/tex] (we can add a 0, because 0 dosen't change the value)
In this case:
[tex]m(slope) = -27.4 ; b(y-inter) = 0[/tex]
Hope this helps!