Which of the following is the correct representation of the polynomial
1 answer:
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let's first find the places where the ball hits the ground, that way we know how many seconds it took, let's set f(t) = 0 like before, check the picture below.
so we know the graph goes from -1/4 to 3, so the ball hits the ground on its way back down at x = 3.
now, let's find the maximum, we only need the x-coordinate from the vertex,
so, the ball reaches at maximum when x = 11/8, or 1.375, and hits the ground when x = 3.
so the domain, namely the values for x are, x ⩾ 1.375 and x ⩽ 3, or we can write it as a triplet of 1.375 ⩽ x ⩽ 3.
