Steps to draw graph of y=ax2+bx+c as follows:
Draw graph of equation y=x2-4x-5
- Determine absis intersection, y = 0
- Determine ordinat intersection, x = 0
- Determine equation of axis of symmetry, x = -b/2a
- Determine maximum or minimum value, y = (b2-4ac)/4a
- Determine coordinate of extreme point, (x,y) = (-b/2a,(b2-4ac)/4a)
- If 5 steps above have not drawn parabola sketch yet, then get some auxiliary point
Draw graph of equation y=x2-4x-5
- Determine absis intersection





