Unit 3 - Quadratic Regression

Find the quadratic regression equation for the relationship of the horizontal distance and the height of the ball in the provided table.

• $-18x^2+2.11x+4.21$
  

• $-0.06x^2+1.06x+7.9$
  

• $-6x^2+1.06x+79$
  

• $-0.12x^2+2.11x+4.22$

Which of the following quadratic equations best represents the following data?

• y = 7x² - 3x

• y = 3x² - 2x + 1

• y = 6x² + 3x - 2

• y = 7x² - 3x + 1

Do a quadratic regression to find the height of the ball when it traveled a distance of 10 feet.

• 12.8 ft

• 13.5 ft

• 11.1 ft

• 17 ft

Determine the curve of best fit using quadratic regression on your calculator.

• y = -2.7x + 7.4

• y = 0.95x² - 2.08x - 0.75

• y = -.05x - 3.26

• y = 0.95x² + 2.08x + 0.75

Using quadratic regression to write a quadratic function to represent to model this relationship.

The equation of the parabola that best fits a set of data is called

• quadratic formula

• quadratic regression

• quadratic standard form

• quadratic function

Using your linear regression, what is y when x is 30?

• 61.59
• 52.46
• 57.94
• 43.04

Tags

CCSS.8.EE.C.8C