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Please help! And please serious answers only


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Sagot :

Answer:

This is a quadratic function

write it in the form [tex]a(x-h)^2+k[/tex]

h and k is the vertex, meaning the coordinate that is lowest or highest point depending on where the function is...pointing. You can see that the function is point up, so h is the x coordinate is at the bottom. the vertex coordinate is (9, -4), im sure you know why. In the formula, h means the x and k is the y. So that means that the h is 9 and k is -4.

now the think will be  [tex]a(x-9)^2-4\\[/tex]

now you find a by plugging one of the point, you can take the point (12, 4)

[tex]a(12-9)^2-4=4\\9a=8\\8/9=a\\[/tex]

so the equation

[tex]8/9 (x-9)^2 -4[/tex]

Step-by-step explanation:

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