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polet [3.4K]
3 years ago
5

If a line crosses though (5,-3) and (-1,6);what is the y-intercept?

Mathematics
1 answer:
harina [27]3 years ago
6 0
(5,-3) (-1,6)
y=mx+b

calculate m:
(-3-6)/(5-(-1)
=-9/6=-1.5

y=-1.5x+b

insert the (5, -3) point to calculate b:

-3=-1.5*5+b
-3=-7.5+b
4.5=b

b=the y intercept, so the line intercepts x=0 at y=4.5
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