Graphing Quadratics

The graph of $y=-2x^2+12x-15$ will be a parabola that opens ___________

• up like a smile

• down like a frown

 What is the axis of symmetry for $y=-2x^2+12x-15$ ?

x= (a)  

 What is y-coordinate of the vertex for $y=-2x^2+12x-15$ ?

We know that x=3, 

so the vertex is (3 ,_______)

y=_________

(a)  

 Here is the table for $y=-2x^2+12x-15$ ?

We know that the vertex is (3 , 3), so it goes in the middle.

What is A?

A= (a)  

 Here is the table for $y=-2x^2+12x-15$ ?

We know that the vertex is (3 , 3), so it goes in the middle.

What is B?

B= (a)  

 Here is the table for $y=-2x^2+12x-15$ ?

We know that the vertex is (3 , 3), so it goes in the middle.

We know that A=-5 and B=1. Therefore, C=______?

• -5

• 1

• 3

 Here is the table for $y=-2x^2+12x-15$ ?

We know that the vertex is (3 , 3), so it goes in the middle.

We know that A=-5 and B=1. Therefore, D=______?

• -5

• 1

• 3

What is the correct graph of the table?

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