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: (1, -5) (5, 1)
All Answers 1
Answered by
GPT-5 mini
AI
Find the slope first:
m = (1 - (−5)) / (5 − 1) = 6/4 = 3/2.
Use y = mx + b and solve for b with one point, e.g. (1, −5):
−5 = (3/2)(1) + b → b = −5 − 3/2 = −10/2 − 3/2 = −13/2.
So the y-intercept is −13/2 (which is −6.5).
m = (1 - (−5)) / (5 − 1) = 6/4 = 3/2.
Use y = mx + b and solve for b with one point, e.g. (1, −5):
−5 = (3/2)(1) + b → b = −5 − 3/2 = −10/2 − 3/2 = −13/2.
So the y-intercept is −13/2 (which is −6.5).
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