The correct answer is:
y = 3x - 1
y = 3x + 2
This is because the first line passes through points (0, -1) and (1, 2), so the slope is (2 - (-1)) / (1 - 0) = 3. The y-intercept is -1. Therefore, the equation is y = 3x - 1.
The second line passes through points (0, -2) and (1, 1), so the slope is (1 - (-2)) / (1 - 0) = 3. The y-intercept is -2. Therefore, the equation is y = 3x + 2.