Steps to Draw a Graph of a Quadratic Function

Quadratic function have a general form y=f(x)=ax² + bx + c, a ≠ 0; a, b, c real constata. When we will to draw a graph of a quadratic function, we must find the y-intercept, the x-intercept, the vertex, and the axis of symmetry.

Steps to draw a graph of a quadratic function : 

1. We find the y-intercept with setting x equal to zero. 

2.  Then we find the x-intercept with setting y equal to zero. 

3.     3. When we want to find the vertex, we will to use the formula of vertex is (–b/2a, -D/4a), D= b² - 4ac.

4.      4. When we want to find the axis of symmetry, we will to use the formula of the axis of symmetry is x = -b/ 2a.

 Dwi Sintia

2010110020

Mathematics Section A