Final answer:
The provided graph is not visible to determine the intersection point which is the solution to the system of linear equations. The concepts of linear equations and their real-life applications are explained with examples from given solutions.
Step-by-step explanation:
The student asked about the solution to the system of linear equations graphed, which isn't provided, hence we cannot select the correct answer from the options given (0,4), (4, 1/2), (1/2,4), (0,3). However, by understanding the concept, we know that to find the solution to a system of equations graphically, we need to look for the point where the two lines intersect on the graph. This point represents the x and y values that satisfy both equations. Typically, the coordinates of the intersection point (x,y) form the solution to the system of equations.
Additionally, under the reference section on linear equations, all options from Practice Test 4 Solutions 12.1 (A, B, C) are correct because they are in the form y = mx + b, which is the standard form for a linear equation. These equations represent straight lines on a graph.
Moreover, understanding how to formulate a linear equation from word problems is also exemplified in the solutions, showing that linear equations are used in various real-life contexts such as calculating total hours based on square footage, or total payments based on the number of students, and so on.