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f(-5) = -5p - q = 14
f( 7) = 7p - q = 26
------------------------------ -
12p = 12
p = 1
7p-q=26
7x1-q=26
7-q=26
-q=26-7
= 19
q=-19
rumus fungsi x ------> f(x)=px-q -------> f(x)=1x-(-19) ----> f(x)= x+19
f(-5)= p.(-5)-q
14= p.(-5)-q
14= 5p-q
f(7)= p.(7)-q
26= p. (7)-q
26= 7p-q
eliminasi 14= 5p-q
26= 7p-q _
-12 = -2p
p= 6
14= 5(6)-q
14= 30-q
q= 16