Final answer:
The y-intercept of the line given by the equation Y = -1(-3) is 0.
Step-by-step explanation:
The equation Y = -1(-3) is in point-slope form. To find the y-intercept of the line, we need to find the value of Y when x is equal to 0. Plugging in 0 for x, we get Y = -1(0) = 0. Therefore, the y-intercept of the line is 0.