Question

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Answer 1

No 1
F(x) = ax +b
F(2) = a.2+b = 1 l 2x l 4a + 2b = 2
F(4) = a.4+b = 5 l 1 x l 4a + b = 5 _
b = -3
2a + b = 1
2a + -3 = 1
2a = 1 +3
2a = 4
a = 4/2 = 2

F(10) = a.10 + b
2x10 + (-3)
18

No 2.
F(x) = -2x + 5
F(-2) = -2.(-2) + 5 = 1

No 3.
F(x) = ax + b
F(-1) = a.-1 + b = -2
F(6) = a.6 + b = 33 _
7a = 35
a = 35/7 = 5
a.-1 + b = -2
5.-1 + b = -2
b = -2 + 5 = 3

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