(-20,96) (-12,60) (-6,33) (-2,15) rate of change

Consider the system: y = 3x + 5 y = ax + b what values for a and b make the system inconsistent? what values for a and b make the system consistent and dependent? explain

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

Which graph represents the equation y =4x