
In Problems 49-54, determine the quadratic function whose graph is given.

To calculate: The quadratic function using the given graphs.
Answer to Problem 53AYU
The equation of the given graph is .
Explanation of Solution
Given:
The given graph is

Formula Used:
The general form of a quadratic equation is .
This general equation can also be written as , where
If , the graph opens upwards.
If , the graph opens downwards.
The vertex of the above function is .
The axis of symmetry will be .
We can find the by equating the equation at .
We can find the by equation the equation at .
1. If then the vertex is the .
2. If then the graph has no .
3. If then the vertex is the .
Calculation:
Let us consider the quadratic equation of the given graph to be
-----(1)
From the given graph, we can see that the of the given function is .
We know that the is the value of the function at , thus, we have
-----(2)
At , (1) becomes
-----(3)
Thus, using (2) and (3), we get the value of .
Thus, equation (1) becomes
-----(4)
Now, we need to find and .
We know that a point in a graph is written as .
The given graph has 2 points and .
Consider the point .
Here, we have and .
Therefore, substituting it in (4), we get
-----(5)
Now, consider the point .
Here, we have and .
Therefore, substituting it in (4), we get
-----(6)
In order to find the values of and , we have to solve the equations (5) and (6).
Therefore, we have
-----(5) And
-----(6).
Now, on adding (5) and (6), we get
On substituting the above value in (5), we get
Therefore, the equation of the given graph is
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