quadratic regression. how do i find the vertex again?!? standard formvertex formfrom graph *don’t...
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![Page 1: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/1.jpg)
Quadratic Regression
![Page 2: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/2.jpg)
HOW do I find the vertex again?!?
Standard Form Vertex FormFrom Graph
*Don’t forget: If “a” is positive, the parabola faces up, but if “a” is negative, the parabola faces down!*
𝑦=𝑥2+6 𝑥−7 𝑦=2(𝑥−5)2+8
![Page 3: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/3.jpg)
What is Quadratic Regression?
0 A process by which the equation of a parabola of "best fit" is found for a set of data.
![Page 4: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/4.jpg)
How do I find it?0If the parabola of best fit is not
already drawn in, draw it.
0Find the vertex of the parabola.
0Match the vertex with the correct equation.
![Page 5: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/5.jpg)
A.)
B.)
C.)
D.)
What is the equation of the parabola of
best fit?
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Your Turn
A.)
B.)
C.)
D.)
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A.)
B.)
C.)
D.)
Let’s draw it in and then find the equation
of the parabola.
![Page 8: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/8.jpg)
A.)
B.)
C.)
D.)
Now You!!
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The table shows the monthly sales (thousands) for a new hair salon since its grand opening in March.
1) Find the best fitting quadratic model.
A.)
B.)
C.)
D.)
![Page 10: Quadratic Regression. HOW do I find the vertex again?!? Standard FormVertex FormFrom Graph *Don’t forget: If “a” is positive, the parabola faces up, but](https://reader036.vdocuments.us/reader036/viewer/2022062423/5697c0151a28abf838ccdf0b/html5/thumbnails/10.jpg)
2) Estimate how much money the hair salon will have made in September (use the information you found in question 1).
A.) Can’t Tell
B.) $10, 040
C.) $23, 600
D.) $11, 600