Name the property the equation illustrates
of 9+(-9)=0

What statement is true? 2x^2-9x+2=-1

Four individuals pool money together to start a new business and agree to split the profits equally. n invests $6,000, x invests $2,000, y invests $8,000 and z invests $4,000. if the profits for the first month were $100,000, y receives than if the profits were divided in proportion to how much they invested.

How can you tell when x and y are not directly proportional?