Y-3=1/2(x+6) What is the equation in standard form

What is the slope of the line shown below?

Each person in an it department of 25 people works on at least one of 3 major projects: system security, program implementation, platform development. 10 people work on system security, 13 work on program implementation, and 12 work on platform development. 4 people work on system security and platform development, 5 people work on program implementation and platform development, and 2 people work on all three projects. how many people work on system security and program implementation?

East black horse $0.25 total budget is $555 it'll cost $115 for other supplies about how many flyers do you think we can buy