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### EOCT Practice

Question of the Day

CCGPS Geometry

UNIT QUESTION: How are real life scenarios represented by quadratic functions?

Today’s Question:

How do we graph quadratics in standard form?

Standard: MCC9-12.F.IF.8

Axis of SymmetryVertex Point

- Axis of symmetry is found using
- To find the y coordinate of the vertex
- point, substitute x into the equation
- and solve for y.

Examples

Find the vertex point

in Standard Form

1. Put the equation in standard form:

3. Find the axis of symmetry:

(vertical line)

Notes-Graphing Quadratic Equations 3.1

Steps to graph quadratic equations

2. Identify the values of a, b, and c.

Steps to graph quadratic equations (cont.)

4. Find your vertex (substitute your axis of symmetry

back into the original equation and solve for y).

5. Construct a table of values for x and y. Choose

values of x, two above and two below your vertex.

6. Plot the points and connect them with a U-shaped curve.

parabola will open up.

If a is negative, then the

parabola will open down.

Graph opens up or opens down?

Tell whether the graph opens up or down. Graph each using a T-chart. Find the axis of symmetry & vertex . Use a dotted line to graph the axis of symmetry.

OPENS UP

a = 1

b = -6

c = 5

Homework

Practice Worksheet

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