X×2=10
X=10÷2
X=5
Proof: 5×2=10
Answer:
At the time that it is kicked, the ball is on the ground, that is, it's height is 0 feet.
Step-by-step explanation:
The height of the ball after t seconds is given by the following equation:

What is the height of the ball at the time it is kicked?
The ball is kicked at t = 0.
So we have to find h(0)

At the time that it is kicked, the ball is on the ground, that is, it's height is 0 feet.
Y - y₁ = m(x - x₁)
y - 5 = -8(x - 2)
y - 5 = -8(x) + 8(2)
y - 5 = -8x + 16
<u> + 5 + 5</u>
y = -8x + 21