Final answer:
Without the equation of the line or additional computation methods provided, we cannot directly determine the y-intercept from just the points (-72,25), (-54,13), and (-36,1).
Step-by-step explanation:
To find the y-intercept of a line given a set of points, we need the equation of the line. However, just by having the points (-72,25), (-54,13), and (-36,1), we do not have enough information directly to determine the y-intercept. We first would need to find the slope (m) of the line that these points lie on. Once we have two points and the slope, we can use the slope-intercept form of a line, which is y = mx + b, where b is the y-intercept, to find the value of b. But given the example points alone with no calculation method provided, we cannot determine b directly from this question.