Answer the question about the given function.
-Given the functi $$f ( x ) = - 5 x ^ { 2 } + 10 x - 1$$ , if x = 1, what is f(x)? What point is on the graph of f?
A) 4; (1, 4)
B) 4; (4, 1)
C) -16; (-16, 1)
D) -16; (1, -16)

Question

Quizplus · Accepted Answer

Substituting x = 1 into the function gives $f(1) = -5(1)^2 + 10(1) - 1 = -5 + 10 - 1 = 4$, so the point on the graph is (1, 4).

Answer the Question About the Given Function f(x)=−5x2+10x−1f ( x ) = - 5 x ^ { 2 } + 10 x - 1f(x)=−5x2+10x−1

Answer the Question About the Given Function $f ( x ) = - 5 x ^ { 2 } + 10 x - 1$