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Arturiano [62]
3 years ago
10

Y=kx+b A (1,-2) B (-2,-8) Linear functions!

Mathematics
1 answer:
Gnoma [55]3 years ago
5 0
K=slope
b=y intercept

find slope
slope=(y2-y1)/(x2-x1)

(x,y)
(1,-2)
(-2,-8)

x1=1
y1=-2
x2=-2
y2=-8

slope=(-8-(-2))/(-2-1)=(-6)/(-3)=2/1=2



k=2
subsitute
y=2x+b
subsitute one point
(1,-2)
x=1,y=-2

-2=2(1)+b
-2=2+b
subtract 2
-4=b


y=2x-4
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