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b.-8n-7
f (-2)= -2p+q
7=-2p+q
q=2p+7
f (3)=3p+q
-3=3p +q
-3=3p+2p+7
5p=-10
p=-2
q=2p+7
=-4+7
=3
a. f (×)=px+q=-2×+3
b . f (4n)= -2* 4n+3
f (4n)= -8n+3