- if you're looking for the inverse of it is -3x + 12 - if you're looking for the slope of it is m equals m=-1/3 - if you're looking for the access interception point of it is the x-intercept is (12, 0 )the Y intercepts is (0,4)
30% off 25: multiply 25 by .30 to find 30%: 7.5. Now subtract that from the sales price: 25-7.5=17.5 Do the same for store B: .40•30=12. 30-12=18. So store A is better by $.50 :) hope this helps :)