I don’t understand someone please help!

Match each expression with its simplified form.

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?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10