Question

how can I find the y intercept if I can't read it directly from the graph because its an improper fraction and/out of view on my limited view of the graph? Two points on exact grid lines: (2, 1) (-2, 0)

Answer 1

Find the slope, then use y = mx + b to solve for b.

1. Slope m = (y2 − y1)/(x2 − x1) = (1 − 0)/(2 − (−2)) = 1/4.
2. Use one point, e.g. (2,1): 1 = (1/4)(2) + b → 1 = 1/2 + b → b = 1/2.

So the y‑intercept is (0, 1/2).