Answer:
The y-intercept is -9.
Step-by-step explanation:
Using the form y = mx + b, b is the y-intercept of the equation. Thus by definition in the equation y = 1/2x - 9, -9 is the y-intercept.
Additionally, the y-intercept is the point where x = 0; thus, when y = 1/2(0) - 9, y = -9.
