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f(-3)= a(-3)+b= -15 = -3a+b=-15 -3a+b=9
f(-3)=a(-3)+b=9 = -3a+b=9 - -3(-24)+b=9
a =- 24 72+b=9
b=9-72
b= -63
rumus fungsi f(x)=-24x-63
f(-2)=-24(-2)-63 = 48-63= -25
f(2)= -24(2)-63=-48-63=-111