This shows the graph of the general quadratic function, [math]f\left(x\right)=ax^2+bx+c[/math].[br][br]You can use the sliders to change the values of a, b and c and see how this affects the graph.[br][br]What is the condition on a, b and c if the graph goes through the x-axis?
1. What Happened to the graph if the value of a is positif?[br]2. What Happened to the graph if the value of b is negatif?
What do you think b represent?[br]Is it value of b is important?
Can you describe what does value of c for? can you spot something from the graph behavior?