Question

plzzzz help me its very urgent question number 8

Answer 1

check the attachment

Answer 2

8. (i) I think what it's asking for is f(x)=2x+3, x ∈ {-1,0,1,2} . I can't think of anything better than this

(ii) Even values: x=0,2

∴ f(0)= 2(0)+3=3

∴f(2) =2(2)+3=7

(iii) f(x)=2

But f(x)=2x+3

∴2x+3=2, 2x=-1, x=-1/2

(iv) f(x)=4

But f(x)=2x+3

∴ 2x+3=4, 2x=1, x=1/2

Hope that helps :)