ANSWER THIS ASAP DONT SEND A FILE AT ALL !!HELPP

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

Need asap. solve for the following inequality

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?