The answer would be A and C.
Hope this helps!<3
Y int is where the line crosses y axis....so it is 4.
the slope is -2
it is given in the question that
Alpha printing will make 400 brochures for $100. Omega printing will make 1,000 brochures for $100.
For Alpha, cost of 1 brochure is

For Omega,
Cost of 1 brochure is

So choosing Omega printing, you will save

on each brochure .
its the 3rd answer i think