Plz me get the answer plz i need it asap

In a graph with several intervals o data how does a constant interval appear? what type of scenario produces a constant interval?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

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.