Direct hit!
Observe that the x-intercepts of the cannon ball’s motion are at x=-5 and x=-1 . Which of the following parabolas is the correct equation for the cannon ball’s motion? (Hint 1: Find the x-intercepts for each!) (Hint 2: Is the parabola in the GeoGebra file concave up or concave down?)
y=2x^2-x-6
y=-x^2+4x
y=-x^2-6x-5