Vertex Form 3

Which equation is graphed above?

Which equations matches the graph above?

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• 
• 
• 

Which equation matches the  graphed above?

Which variable, when negative, can cause the parent function to reflect across the x-axis (face downwards)?

• a

• h

• k

y = ax² + bx + c is

• a quadratic equation in vertex form
• a linear equation in vertex form.
• a quadratic equation in standard form.
• a linear equation in standard form.

When x² is changed to x² -3, the graph

• Shifts left 3 units.
• Shifts right 3 units
• shifts up 3 units.
• Shifts down 3 units.

A parabola is upside-down when a is:

• negative

• positive

• 0

• infinite

If given the equation

y = 3(x + 5)² - 4,

what is the vertex of the parabola?

• (5, -4)

• (-5, -4)

• (-15, -4)

• (15, -4)

What is the equation of this graph?

• f(x) = (x -5)² + 1

• f(x) = (x - 1)² - 5

• f(x) = (x + 1)² - 5

• f(x) = (x + 5)² +1