Answer:
45°
Step-by-step explanation:
gradient of the line:
Let A (-1,-3) and B (5,3)
tan a = (yB - yA) / (xB - xA) = (3 - -3) / (5 - -1) = 6/6 = 1
--> the angle made by the line and positive direction of x-axis is:
[tex]a = { \tan}^{ - 1} (1) = 45[/tex]
