So this is x-axis, y-axis, let me mark some stuff off here. So this is 1, 2, 3, 4, 5. This is 1, 2, 3, 4. 1, 2, 3, 4. So g of x, when x is 0, it's 0. When x is 1, it is 1. When x is negative 1, it's 1.