What is the equation of the blue graph?

Complete the solution of the equation. find the value of y when x equals to 28 x+3y=28

How do i simply this expression (quadratic formula basis) on a ti-84 or normal calculator?

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%