Use the table to write a quadratic function in vertex form. Then rewrite the function in standard form.

Step-by-step explanation:

The graph decreases at first, then changes direction at (2, 5).

y = a(x-2)^2 + 5

Plug in (1,11) and solve for a:

11 = a(1-2)^2 + 5

a = 6

Equation in vertex form:

y = 6(x-2)^2 + 5

6x - 3x = 3x

Step-by-step explanation:

you add the grouped numbers together, and then subtract

6x - 3x = 3x

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Hope this helps!