ALGEBRA 1: 10.3 GRAPHING

QUADRATICS

Learning Task/Big Idea: Students will learn how to find roots(x-intercepts) of a

quadratic function and use the roots to graph the parabola.

NOTES:

When you solve a quadratic equation your solutions are the _______________ of the graph.

Another word for the solutions of a quadratic equation is _____________________.

We can solve the quadratic equation and use the solutions to help graph the equation.

We also need to know if the graph opens UP or DOWN and the Vertex of the parabola.

a

b

2

a

b

2

EX1: SOLVE, DETERMINE WHETHER THE PARABOLA OPENS UP OR DOWN AND FIND THE VERTEX.

162 xy

EX2: 2452 xxy

EX3: 1682 xxy

EX4: xxy 52