Respuesta :

irspow
y=mx+b, and you are told that b=2.5 so

y=mx+2.5, now using point (4.5,-4.25) we can solve for m

-4.25=4.5m+2.5

-6.75=4.5m

-1.5=m so now we have the line:

y=-1.5x+2.5