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10 cards from this deck
y=ax2+bx+cy = ax^2 + bx + cy=ax2+bx+c where a≠0a \neq 0a=0
Parabola
Upward (U-shape)
Downward (∩-shape)
Set y=0y = 0y=0 and solve for xxx
Halfway between the two x-intercepts
x=−b2ax = -\frac{b}{2a}x=−2ab
Vertical line through turning point
Smooth curve, no sharp corners or spikes
Steeper and narrower
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