Curve of Best Fit

Based on this pattern, would a Linear or Quadratic model be most appropriate?

• Quadratic

• Linear

• Exponential

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

Match the correct type of function that appears to best fit the data for each graph shown.

• Quadratic

• 
• Linear

• 
• Exponential

• 

Tags

AII.9

Find the best fitting quadratic model for the data given.

• y = 1.2x² + 13x + 504.3

• y = 12x² + 13x + 504.3

• y = .12x² + 1.3x + 504.3

Using the quadratic curve of best fit, find the height of the ball when it traveled a distance of 10 feet.

• 12.8 ft

• 13.3 ft

• 11.1 ft

• 17 ft

The table shows the average braking distance of a car at various speeds.  Use a quadratic model to predict the breaking distance at 70mph.  

• 245 ft
• 225 ft
• 285 ft
• 265 ft

When using Desmos to find the curve of best fit, what do I need to enter first?

• y₁ ~ ax₁² +bx₁ + c

• the equation

• the table/chart of values

• the vertex

A scientist dropped an object from a height of 200 feet. She recorded the height of the object in 0.5-second intervals. Her data is shown.

Based on a quadratic model, which best approximates the height at 3 seconds?

• 52 feet

• 55 feet

• 65 feet

• 80 feet

Given the following scatter plot, which equation best models the data?

HINT: graph them in desmos. Zoom out to see more!

Tags

AII.9