9x squared - 12x = -5 completing the square

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =

What are linear equations? could'ya explain too me, ? ! and how do you see what graph is a proportional relationship?

Brad earns $12.75/hr and works 40 hours a week. what is his gross annual income?