GeoGebra Classroom

Graphing Standard Form

Standard Form

A quadratic function in standard form is written .

What point is given to you by the standard form? HEADS UP! When you check your answers for multiple choice questions, the correct answer will be highlighted with a green stripe. Green checkmarks mean you were correct for NOT picking it. Confused me too!

Select all that apply
• A
• B
• C

Question

What are the other 4 points you need?

Select all that apply
• A
• B
• C
• D
• E
Create a table in your notes with 5 columns titled: function, a, b, c, vertex, y-intercept and x-intercept(s). Record the function, a, b, c, then turn on its graph and record the rest of the information. I did the first one for you.
 Function﻿ ﻿a= b﻿= c=﻿ vertex﻿ y-intercept﻿ x-intercept(s)﻿ ﻿ ﻿1 ﻿0 ﻿0 ﻿(0,0) ﻿(0,0) ﻿(0,0) ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿ ﻿

Which coefficient was the same for all four functions and what was its value?

How many different points did you get for each function?

Closure Question

If you only have 1 point and you need 5 points, how do you get the other four points?

Vertex

Which of the following formulas is used to find the Axis of Symmetry and the x coordinate of the vertex?

Select all that apply
• A
• B
• C
• D