With hours of work graphed on the x-axis and the wage graphed on the y-axis, the backward-bending labor supply curve Multiple choice question. has a negative slope at low wage levels and has a positive slope at high wage levels. has a positive slope at low wage levels and has a negative slope at high wage levels. has a positive slope at low levels of hours of work and a negative slope at high levels of work (i.e., hump-shaped). has a negative slope at low levels of hours of work and a positively slope at high levels of work (i.e., u-shaped)