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Sagot :
Answer:
y=4x+8
Step-by-step explanation:
y-y₁=m(x-x₁)
y-4=4(x--1)
y-4=4(x+1)
y-4=4x+4
y=4x+8
Answer:
y=4x+8
Step-by-step explanation:
the linear line equation is y=mx+b
m=slope
b=y axis intercept
b is the only one we don't know, so:
4=4(-1)+b
4=-4+b
add 4 on both sides
8=b
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