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igomit [66]
1 year ago
12

which function is best represented by this graph?A) f(x) = -3x² + 2x + 1 B) f(x) = 3x² + 2x - 4C) f(x) = x² + x - 4D) f(x) = x²

+ 2x - 3

Mathematics
1 answer:
Harlamova29_29 [7]1 year ago
4 0

Answer:

From the graph, the roots of the equation are given below as

\begin{gathered} x=-3 \\ x=1 \end{gathered}

These are the points where the curve cuts the x-axis

The y-intercepts of the graph is given below as

(0,-3)

Concept:

To find the equation of the graph, we will use the formula below

\begin{gathered} f(x)=a(x+3)(x-1) \\ x=0,y=-3 \\ -3=a(0+3)(0-1) \\ \frac{-3}{-3}=\frac{-3a}{-3} \\ a=1 \end{gathered}

Hence,

By substituting the values, we will have

\begin{gathered} f(x)=a(x+3)(x-1) \\ f(x)=1(x+3)(x-1) \\ f(x)=x^2-x+3x-3 \\ f(x)=x^2+2x-3 \end{gathered}

Hence,

The function of the graph is

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

OPTION D is the right answer

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