What is the sum for each of these??

Choose the point slope form of the equation below that represents the like that passes through the points (-6,4) and (2, 0)

Lance lived in portugal and brazil for a total of 14 months to learn portuguese. he learned an average of 130 new words per month when he lived in portugal, and an average of 150 new words per month when he lived in brazil. in total he learned 1920 new words. write a system of equations to represent the situation. use x to represent portugal, and y to represent brazil

If the discriminant if a quadratic equation is 4 which statement describes the roots?