Which of the functions is represented by the graph O f(x)=2x²+3 O f(x) = -x² + 3 O f(x) =1/2x² + 3 O f(x) = -1/2x +3 Pls help

asked Jan 8, 2023 63.7k views

1 vote

Which of the functions is represented by the graph

O f(x)=2x²+3
O f(x) = -x² + 3
O f(x) =1/2x² + 3
O f(x) = -1/2x +3

Pls help

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4 votes

Answer:

f(x)=-2x^2+3

Explanation:

The vertex is at
(0,3) , so the equation is of the form
f(x)=ax^2+3 .

Using the point
(1,1) to solve for
,

$1=a+3 \implies a=-2 \\ \\ \therefore f(x)=-2x^2+3$

Leobrl answered Jan 13, 2023

7.1k points

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