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h(6)=6a+9
-6a=9
-a=1.5
a=-1.5
B.h(x)=-1.5x+9
ax+9 = - 6 ⇒ h (X) = ax+9
-5(6) +9
-30 +9
- 21
a.(3) +9 = -6
3a +9 = -6
3a = -6 -9
3a = -15
a = -15 : 3
a = -5