Which equation has no solution?

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 =

If x varies directly as y, and x = 7.5 when y = 10, find x when y = 4

Is (0,0) a to ? ys x2 - 4 y> 2x-1