Y-Intercept Quadratics

2.B.2 - Quadratics in Intercept form and Converting between forms

​Ex 1: Finding key features in intercept form without graphing

​Ex 2: Quadratic Models in Intercept Form

​a) How far is the football kicked?

​b) What is the football's maximum height? Round to the nearest tenth if necessary.

​Ex 4: Provide the requested information

​x-int(s):                                                   y-int(s):

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vertex:                                                    Min/Max:

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Equation in Intercept form:

​Equation in Vertex form:

​The three forms of quadratic equations are:

​Ex 5: Write the following equations in standard form.

​Ex 5: Write the following equations in standard form.

Multiple Choice

Write the following equations in standard form:

  $$y=-3x\left(x-8\right)$$  

• $$y=5x^2+15x$$  

• $$y=20x$$  

• $$y=6x+3$$  

• $$y=5x+15$$  

Multiple Choice

Write the following equations in standard form:

  $$y=5\left(x-2\right)\left(x+4\right)$$  

• $$y=5x^2+10x-40$$  

• $$y=5x^2-40$$  

• $$y=25x^2-50x+10$$  

• $$y=10x+10$$  

Multiple Choice

Write the following equations in standard form:

  $$y=\left(x+3\right)^2$$  

• $$f\left(x\right)=x^2+6x+9$$  

• $$f\left(x\right)=x^2+9$$  

• $$f\left(x\right)=2x+6$$  

• $$f\left(x\right)=x^2+6x$$  

Open Ended

How can I help:

What two math ideas are you having the most trouble with today?