IULIVIT The initial height of the diving board is when the time is zero.
h(0) = -4.9x2 + 8x + 5
h(0) = -4.9(0)2 + 8(0) + 5
h(0)= 0+0+5
h(0) = 5
The initial height of the diving board is 5 m.
The time at which Jeremiah reaches his maximum height is the x-
coordinate of the vertex.
X =
---
2a
х
20
-8
2 =
-9.8
x = 0.82 sec
seconds to reach his maximum
It took Jeremiah
height
The maximum height was reached by Jeremiah at
seconds. The maximum height is the y-coordinate of the vertex