Tristan is performing an experiment in his science class. He’s measuring how much weight is required to stretch a spring from rest. Using graph paper, he plots the stretch of the spring against the amount of the applied weight. He finds that the graph is a straight line passing through the origin. Study the graph and answer the questions that follow. NEED ANSWER ASAP

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Which representation has a constant of variation of -2.5

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)