i want a simple answer for each part please.

1. (10 points) Forward Propagation and Backpropagation for a Simple Computational Graph A simple computational graph is given below. y Z a) Compute forward propagation for x = 1, y=3, and z= -2, b) Write local gradients for this simple computational graph. c) Now compute backward propagation. Show the steps and upstream and downstream gradients in your solution