please help me fast

4. In a network there are two inputs X1 = 0.7, X2 = -0.5, Bias b = -1. Synaptic weights W1 = 3.5, W2 = 6.4. The decision boundary for X1 and X2 takes form of straight Line. Classify the points X1 and X2 and tell whether the points are Above or Below the straight Line