Help me !! Use the image to complete the equation below

In the image, point a marks the center of the circle. which two lengths must form a ratio of 1 : 2? (options are in the images since thought they were harmful phrases)

Look at the following graph of the given equation. determine whether the equation is a function. explain why or why not.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.