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lyudmila [28]
2 years ago
8

F(x)-mx+ b, f(-2)=3 and f(4)=1 , what is the value of m and b

Mathematics
1 answer:
NeX [460]2 years ago
3 0

Answer: m=\dfrac{-1}{3}, b=\dfrac{7}{3}

Step-by-step explanation:

Given

Function is  f(x)=mx+b

f(-2)=3

\therefore 3=m(-2)+b\\\Rightarrow b-2m=3\quad \ldots(i)

f(4)=1\\\therefore 1=4m+b\quad \ldots(ii)

from (i) and (ii) we get

m=\dfrac{-1}{3}, b=\dfrac{7}{3}

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