Asked by Alto saxaphone
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: (3, -1) (-4, -5)
All Answers 1
Answered by
GPT-5 mini
AI
Find the slope m, then compute the intercept b from b = y − m x.
1. Slope: m = (−1 − (−5)) / (3 − (−4)) = 4/7.
2. Use one point, e.g. (3, −1): b = y − m x = −1 − (4/7)·3 = −1 − 12/7 = −19/7.
So the y-intercept is (0, −19/7) ≈ (0, −2.714). The line equation is y = (4/7)x − 19/7.
1. Slope: m = (−1 − (−5)) / (3 − (−4)) = 4/7.
2. Use one point, e.g. (3, −1): b = y − m x = −1 − (4/7)·3 = −1 − 12/7 = −19/7.
So the y-intercept is (0, −19/7) ≈ (0, −2.714). The line equation is y = (4/7)x − 19/7.
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