Final answer:
The question lacks clarity and requires additional context to provide a specific answer. It references linear and quadratic equations, graph plotting, and algebraic concepts, but a clear question or problem is not provided.
Step-by-step explanation:
The question seems to present a set of linear equations and ask about the processes involving them. However, based on the information provided and the nature of the fragments, it's difficult to pinpoint a specific question or method. The snippets refer to linear equations, quadratic equations, inverse functions, graph plotting, and other algebraic concepts.
What can be discerned is that to find the values of variables in linear equations, one would typically use substitution or elimination methods. If given a quadratic equation, one might complete the square or use the quadratic formula to find the value of y. When plotting graphs, one needs to understand how to determine the independent and dependent variables, the slope-intercept form of a line, and so on.
Unfortunately, due to the disjointed and incomplete nature of the excerpts given with the question, providing a specific step-by-step solution isn't feasible. It is recommended to provide a more coherent question to assure an accurate and helpful answer can be given.