A transverse mechanical wave propagates along a stretched string. Graph 1 shows the displacement \(y\) of the string as a function of position \(x\) at time \(t = 0 \text{ s}\), and Graph 2 shows the displacement \(y\) of the string element at position \(x = 0 \text{ m}\) as a function of time \(t\). Which of the following correctly identifies both the speed and direction of propagation of the wave with valid physical reasoning?