Which of these is a function? {(0, 1),(1, 2),(1, 5),(2, 9)}
{(0,4),(0,5),(0, 9),(0,23)}
{(0.4),(2, 4),(3, 7),(4.9)}
{(6.0),(6, 1),(6, 7),(6,11)}

Simplify the given expression leaving the answer in improper fraction form. 2/3+5/6

Which graph correctly represents the equation  y=−4x−3? guys me iam not trying to fail summer school and will offer 40 points for who ever me with the next 3 problems and will give brainlest

If the average of x,y and z is 15 what is their sum