Find x please

What are the constants in this expression? -10.6+9/10+2/5m-2.4n+3m

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?

Aquadratic equation in standard from is written ax^2= bx+c, where a,b and c are real numbers and a is not zero?