Quadratics

• y = x² + 4x + 5
• y = (x² + 4x ) + 5
• y = (x² + 4x + 2²) + 5 - 4
• y = (x² + 4x + 4 ) + 5 - 4
• y = (x + 2)² + 1

Will this graph open upward or downward?
upward because the coefficient of x² is a positive 3

What is the axis of symmetry?
axis of symmetry is -2

What is the y intercept?   5
What is the vertex?   (-2,1)
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