Please help select the correct answer what is the zero of the function represented by this graph

Which expression gives the area of the triangle shown below

Empty box + box + empty box fill in the box is equal to 30 how

Lindsay used two points, (x, y; ) and (+2.82), to find the equation of the line, y = mx + b, that passes through the points. y2-y, first, she used the definition of slope and determined that the value of mis x, - . given this information, which expression must represent the value of b?