Question

adrian throws a ball up in the air. the graph below shows the height of the ball h in feet after t seconds. how many seconds have gone by when the ball is at its highest point?

Explanation:

Step1: Identify peak on graph

The highest point of the graph of height $h$ vs time $t$ is the vertex of the parabola. The coordinates of the vertex are given as $(1,16)$.

Step2: Determine time value

The $x$-coordinate of the vertex represents the time $t$ when the ball is at its highest - point. The $x$-coordinate of the vertex $(1,16)$ is $t = 1$.

Answer:

1