Question

A ball is dropped from the top of a building. The distance in meters above the ground y of the ball after t seconds can be modeled by the equation.
y= -9.8tsquared + 100.

a. What is the y-intercept of the equation?

b. Describe the meaning of the y-intercept of the graph of the equation.

Answer 1

y-intercept occurs at t = 0.

y = -9.8 (0)^2 + 100
y = 100

In this equation, the y-intercept represents the the initial height of the ball at the time t = 0.

Answer 2

Thank you sooo much