The equation of the line which is perpendicular to the line y = 2x + 3 and passes through the point (-3, 1) is:
2x + y + 5 = 0.
x + 2y + 1 = 0.
x - 2y + 1 = 0.
x + 2y - 5 = 0.
In the figure, the value of angle x is:
45°.
30°.
60°.
150°.
