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algebra 1 NEED NOW!!! PLEASE HELPPP

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The height of a soccer ball that is kicked from the ground can

be approximated by the function:

y = -12⋅x^2 + 48⋅x


where y is the height of the soccer ball in feet x seconds after it is kicked.


Find the time it takes the soccer ball to reach its maximum height: _____ seconds

What is the soccer ball’s maximum height:___ feet

Find the time it takes from the moment the soccer ball is kicked until it returns to the ground: ____ seconds

  • algebra 1 NEED NOW!!! PLEASE HELPPP - ,

    y = -12 x^2 + 48 x
    complete square to find vertex
    -y/12 = x^2 - 4 x
    -y/12 + 4 = x^2 - 4 x + 4
    -y/12 + 4 = (x-2)^2
    vertex, max height, when x = 2
    then y/12 = 4 or y = 48 feet
    y = 0 again when x = 4 seconds

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