The graph shows the relationship between the length, x, in meters, of a pendulum and its period, y, in seconds. the period is the amount of time it takes the pendulum to swing forward and back. which type of function best models the data in the graph?

a- linear
b- exponential
c- square root
d- inverse variation

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

Math it's appreciated. (picture provided)

Wich statement could be used to explain why the function h(x)= x^3 has an inverse relation that is also a function