Case 3: Quadratic Graph

y = (x - 2)(x + 3)

y = (x - 2)² + 3

y = -x² - 2x - 1

y = -x² - 4

y = 3x² + 4

y = -x²

y = 3x²

They are all parabola (which a ≠ 0), except for y = 0x² (it is a linear)
If the coefficient of x² is 0, the graph will become a linear.
The graphs have both an increasing and decreasing gradient.
They have maximum or minimum turning point.
There is a line of symmetry parallel to the y axis.
The constant of the graph dictates the y-intercept.
The coefficient of x² dictates the shape of the graph.


by: Aziel, Jemaimah and Kai Chek