How to Graph the quadratic Function

The Steps:

1.       The teacher give the students some problem of quadratic equation. Such as y = x^2+3x-8

2.       And then, the students should the to the find how to graph of a quadratic equation

3.       The next is the steps in the process to graphs

4.       Determine the intersect point of x_1,2 axis =0. Use factorization or ABC formula.

5.       Determine the intersect point of y axis , x=0

6.       So, we get a point (X₁ , 0) (X₂ , 0)

7.       And you can sketch the point in Cartesian diagram

8.       After that, determine the line of symmetry,  x= b/2a

9.       Connect the points, so we get parabolic graph

10.   And then, plot the point (x, y) that you have found into Cartesian diagram.