Coffee is a mixture.
A solute is a solid that can dissolve, and a solution is a solid that has dissolved in a liquid. Since ground coffee beans are insoluble, coffee is neither a solute nor a solution. Instead, coffee is considered a mixture of dissolved extracted taste and aroma substances from the coffe beans.
This is a liquid nonhomogeneous mixture.
Only soluble (instant) coffee can form o homogeneous solution.
Only a coffee made with instant coffee is a homogeneous solution.
It would be a heterogeneous mixture because of the little coffee grounds floating around. It's not uniform throughout.
It is a solution if you would have done your science homework you would know this.
Black coffee is not a solution, but is actually a mixture. Small particles of the coffee (and sometimes actual grounds) make it through the coffee filter and give it a uniform, black color.
A black coffee with sugar would be a solution, as the sugar dissolves completely into the coffee. However, the coffee itself is a mixture of water, coffee beans, and other compounds, making it a homogeneous mixture. Pure substances only have one type of molecule or atom in them, so coffee and sugar are both mixtures.
Sugar solution
Coffee is a homogeneous mixture (assuming it has been well-stirred), as the mixture has a uniform composition throughout. Dividing the mixture into macroscopic parts, each part will have the same composition as the original mixture.
It would be a heterogeneous mixture because of the little coffee grounds floating around. It's not uniform throughout.
Freshly-brewed black coffee is a homogeneous mixture. It consists of water as the solvent and coffee particles as the solute, which dissolve to form a uniform solution.