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lbvjy [14]
2 years ago
11

Given the function f(x) = x2 and k = –1, which of the following represents a function opening downward?

Mathematics
1 answer:
WITCHER [35]2 years ago
5 0
<span>f(x) = ax2+bx+c, is quadratic equation
</span><span>function opening downward if the a<0, 
</span><span>kf(x) = -x², a= -1<0  
so the answer is </span><span>B.kf(x) </span><span>

</span>
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