Hope this helps, your welcome :)
Answer: From what you wrote the I think the ball is drop
At time 0 you are 7 meters above ground
You basically just need to solve for
1.5 =7t-4.9t^2
by rearrange the equation you get
4.9t^2-7t+1.5=0
by using Quadratic Formula
t=1.166s
Point slope form, y-y1 = m(x-x1)
Here, y1 = -1, x1 = 4, m=8
so, it would be: (y+1) = 8(x-4)
Answer:
A)
The x- intercepts are (0, 0) and (4, 0)
<u>As per graph negative values of y are in the interval:</u>
B)
<u>Positive values of y are in the interval:</u>
