What are the different methods to identify functions

Askateboard ramp is in the shape of a right triangle what is the height of the ramp

What is the equation of a line that passes through points (0, 4) and (-4,-8)?

Pleasseee important quick note: enter your answer and show all the steps that you use to solve this problem in the space provided. use the circle graph shown below to answer the question. a pie chart labeled favorite sports to watch is divided into three portions. football represents 42 percent, baseball represents 33 percent, and soccer represents 25 percent. if 210 people said football was their favorite sport to watch, how many people were surveyed?