Which function best represents this graph?

What is the base of 1/9 to the power of 2

The maximum distance (in nautical miles) that a radio transmitter signal can be sent is represented by the expression 1.23h√, where h is the height (in feet) above the transmitter. estimate the maximum distance x (in nautical miles) between the plane that is receiving the signal and the transmitter. round your answer to the nearest tenth.

All of the following ordered pairs satisfy the function rule y=-2x-1 except.