EOCT Practice

1 / 20

# EOCT Practice - PowerPoint PPT Presentation

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. Coefficients. a, b, and c are coefficients. Examples:

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' EOCT Practice' - wilda

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

### 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

Coefficients

a, b, and c are coefficients

Examples:

Find a, b, and c

Example #1

A > 0

Therefore, the

parabola

opens up

Example #2

A < 0

Therefore, the

parabola

opens down

Examples:

Determine if the Parabola

Opens Up or

Opens Down

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

1. Put the equation in standard form:

3. Find the axis of symmetry:

(vertical line)

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

Steps to graph quadratic equations (cont.)

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.

If a is positive, then the

parabola will open up.

If a is negative, then the

parabola will open down.

Graph opens up or opens down?

OPENS DOWN

a = -1

b = 2

c = -1

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

OPENS DOWN

a = -1

b = -2

c = 3

OPENS DOWN

a = 1

b = 2

c = -6

OPENS UP

a = 1

b = 8

c = 13

OPENS UP

a = -1

b = 2

c = 0

Homework

Practice Worksheet