How do some and cosine relate to x and y coordinates on a unit circle?

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

Solve the formula ax+ by = c for x.

Which of the following circles have their centers on the x-axis? check all that apply.