Find the Quadratic Equation from the Scatter Plot

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

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

• Quadratic

• Linear

If this is an equation for a curve of best fit, find the output (y) when the input (x) is 13:

y = 1.2x² - 3.7x - 19

• -51.5

• 135.7

• 154.7

• 183,8

Find the quadratic equation for the relationship of the horizontal distance and the height of the ball.

• y = -18x² + 2.11x + 4.21

• y = -.06x² +1.06x + 7.9

• y = -6x² +1.06x + 79

• y = -.12x² + 2.11x + 4.22

Find the quadratic equation for the relationship of the horizontal distance and the height of the ball.

• -18x² + 2.11x + 4.21

• -.06x² +1.06x + 7.9

• -6x² +1.06x + 79

• -.18x² + 2.11x + 4.21

Which of the following equations most closely represents the equation of the curve of best fit for the data?

Using the quadratic curve of best fit, which equation most closely represents the set of data?

Using a quadratic model of best fit, determine when the ball hit the ground or when y=0.

• 4.60 seconds

• 4.83 seconds

• 4.52 seconds

• 4.26 seconds