From the information: v is 64 while c is 5
Differentiate the new equation h=-16 + 64t + 5 to get
= -32t + 64.
no 13). At maximum height this derivative equals zero so: -32t + 64 = 0; -32t = -64; t=2.Hence ans is 2 secs
no 14). put t as 2 sec in the equation: h=-16 + 64t + 5. This gives
h=-16( ) + 64(2) + 5; h=-64+128+5=69. Hence h is 69ft
Graph the equation. There are multiple ways to do this.
You can create a table of values, use the quadratic formula, convert from standard to vertex form.
If you're trying to factor, you'll eventually notice this thing cannot be factored (no roots!). If you use the quadratic formula, you will get an imaginary answer (no roots!)
If you go in the route of picking points and coming up with a table of values you'll get a graph like this (see attachment) Notice there are no roots! because the graph never ever hits the x-axis
