question look at picture and answer questions 1 through 8

Which of the following could be the graph of the equation y = -2x + 5

Nick has box brads. he uses 4 brads for the first project. nick let’s b represent the original number of brads and finds that for the second project, the number of brads he uses is 8 more than half the difference of b and 4. write an expression to represent the number of brads he uses for the second project.

What is the result of adding the system of equations? 2x+y=4 3x-y=6