Find the slope y = 6x-1

Which statement about the graph of y = 8(0.25)^2

Adepartment store purchases screen-printed t-shirts at a cost of $5 per shirt. they mark up the price 150% (making the selling price 250% of the store's purchase price) and put them on the sales floor. every month that a t-shirt doesn't sell, the store reduces the selling price by 25%.

5x−4≥12 or 12x+5≤−4 can you with this problem