Question

The path of a roller coaster over a particular lenght of track can be represented by a quadratic function f, where f(x) represents the vertical displacement above or below a support bar (in meters), and x represents the horizontal displacement to the left or right of a flagpole (in meters). The roller coaster dips below the support bar for values of x between -2 and 1. Which function could represent f?
A. f(x)= (x-2)^2+1

B. f(x)= (x+2)^2+1

C, f(x)= (x-2)(x+1)

D. f(x)= (x+2)(x-1)

Answer 1

Option D. Solve both expressions and you get -2 and 1 for the x values