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Katen [24]
3 years ago
13

When you ARE NOT given the vertex from a graph, how do you find the k value?

Mathematics
1 answer:
Simora [160]3 years ago
5 0

Answer:

f( -  \frac{b}{2a} )

Step-by-step explanation:

When you not given the vertex form, the you are given the standard form:

f(x) = a {x}^{2}  + bx + c

The value of k, is the y-value of the vertex of the function.

To find the value of k, you plug in

x =  -  \frac{b}{2a}

In order works, you evaluate

f( -  \frac{b}{2a} )

This will give you the k-value

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