3 years ago

The value of k 4x^2 +20k+k

Mathematics

1 answer:

Wittaler [7]3 years ago

8 0

Step-by-step explanation:

You want the to find the value of k such that the y coordinate of the vertex is 0.

0=x2−6x+k

The x coordinate, h, of the vertex is found, using the following equation:

h=−b2a

h=−−62(1)=3

Evaluate at x = 3:

0=32−6(3)+k

k=9

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