PLEASE HELP I NEED HELP ASAP the graph shows the depth y in meters of a shark from the surface of an ocean for a certain amount of time, x, in minutes:
Part A: describe how you can use similar triangles to explain why the slope of the graph between points A and B is the same as the slope of the graph between points A and C
Part B: what are the initial values and slope of the graph, and what do they represent.
PLEASE SHOW ALL WORK
WILL GIVE BRAINLIEST IF CORRECT!!!

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain