Quadratic Lines of Regression

Based on the table, which function can best be used to model this situation?

• h(t) = 99t² + 858

• h(t) = -4.9t² + 295t + 0.6

• h(t) = -4.9t² + 295t + 2

• h(t) = 99t² + 1,470.3

Estimate the amount of time in seconds it took for the projectile to reach the ground.

• 60 seconds

• 10 seconds

• 85 seconds

• 175 seconds

Based on the table, what was the maximum height of the projectile?

• 4, 440 feet

• 30 feet

• 3, 940 feet

• 35 feet

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

Find the population for 1975.

• 623 thousand people
• 650 thousand people
• 599 thousand people
• 513 thousand people

What is the maximum value of the function?

• 9

• 2

• 8

• -4

Determine the curve of best fit.

• y = -2.7x + 7.4

• y = 0.95x² - 2.08x - 0.75

• y = -.05x - 3.26

• y = 0.95x² + 2.08x + 0.75

The table below gives the number of hours spent studying for a math exam (x) and the exam grade (y). Using a line of best fit, predict the exam grade of a student who studied 5 hours.

• 100

• 93

• 96

• 87

This set of ordered pairs shows a relationship between x and y. Using the line of best fit, which is closest to the output when the input is 3?

• 10.72

• 9.5

• 2.5

• 13

Find the best fitting Quadratic model for the data

• -.26x^2-17.3x+222.8
• -.26x²+22.59x+23.02
• 2.6x²+22.9x+20.03
• 2.6x²+2.3x+23.02