A quadratic function for a parabola has axis of symmetry x = -2, points (-3, 2) and (0,11) and opens upward. What is the value of a? What is the vertex?

Let's see what to do buddy..

Step-by-step explanation:

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STEP (1)

We know that the quadratic functions form are like this :

The quadratic function opens upward so ;

The axis of parabolic symmetry passes through the vertex of the parabolic.

So we know that x vertex is equal to -2.

The vertex's x is finding from this equation:

So we have :

Multiply the sides of the equation by 2a :

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STEP (2)

A quota passes through points (-3,2) and (0,11) , so points (-3,2) and (0,11) must be true in the quota equation.

And we're done.

Thanks for watching buddy good luck.

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b.an increase in a causes b to decrease