(Solved): The graphs below show level sets for six different functions, where the red areas represent the th ...

The graphs below show level sets for six different functions, where the red areas represent the the lowest heights and the purple areas are the highest heights. A B c Match the following functions with the proper graphs above. 1. \( f(x, y)=3 x-y^{2} \) 2. \( f(x, y)=y^{2}-3 x \) 3. \( f(x, y)=4-3 x^{2}-y^{2} \) 4. \( f(x, y)=x^{2}-3 y \)