Is the answer a, b,c or d​

Which of the following is the shape of a cross section of the figure shown below

Look at the hyperbola graphed below. the hyperbola gets very close to the red lines on the graph, but it never touches them. which term describes each of the red lines? o o o o a. asymptote b. directrix c. focus d. axis

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g