hello :<span><span>the parabola's equation is : f(x) = a(x-5)²-5 the coefficient of the squared expression in the parabola's equation is : a but ; f(6) = - 1 - 1 = a(6-5)²+5 a+5=-1.....a=-6 f(x) = -6(x-5)²+5</span></span>
<span><span>so : a = - 6</span></span>
Answer:
-6
Step-by-step explanation:
2!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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B & D
