Question

If f(x)=ax+b, f(-3)=-4 and f(3)=2, find the value of a and b.

Answer 1

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Answer 2

Answer:

a=1 b=-1

Step-by-step explanation:

f(-3)= a(-3) +b

-4= -3a + b________(i)

f(3)= a(3) +b

2= 3a +b_________(ii)

by adding eq (i) and (ii)

-2 = 2b

b=-1

by subtracting eq (i) and (ii)

-6 = -6a

a=1