If a solution to a linear system of equations is no solution, then what must be true about the graph of the system?

Plzzz asapppppp what is the inverse of f if f(x)=^3 sqrt x-5

During your cycling trip, you and your friends often stayed in hostels. the prices of these are listed below. hostel standard room (price per night) with breakfast (price per night) super sleep hostels £22.45 £28.65 normandy nights £18.55 £25 zzzola hostels £24.50 £30.99 belgian beds £11.20 £18.55 night-time rest days ? £33 what is the range in cost for a single night, including both standard room prices and with breakfast prices?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)