What is the equation (in slope-intercept, y=mx+b form)?

What is the y-intercept of the graph below? (this would often be a coordinate, but just think about what you would substitute for "b" in y=mx+b)

What is the slope of the graph below? (what would you substitute for "m" in y=mx+b)

What is the equation (in slope-intercept, y=mx+b form)?

What is the equation (in slope-intercept, y=mx+b form)?

What is the equation (in slope-intercept, y=mx+b form)?

What is the equation (in slope-intercept, y=mx+b form)?
