Question

thanks

Answer 1

Just a second. I'll get back shortly

Answer 2

Lets write it as Height being a function of time.
They told us that we can model it as a linear function, so lets do that! :)
It will be of the form:
y=mx+b

So we have a function:
h(t)=mt+b

So they gave us some information.
h(3)=17
h(5)=15

We'll write these as ordered pairs. (3,17) (5,15).
We'll find the m value (slope of our line) by using this form.

\[m=\frac{ y_2-y_1 }{ x_2-x_1 }\]Which for us will be written like this:\[m=\frac{ h(5)-h(3) }{ 5-3 }\]\[=\frac{ 15-17 }{ 5-3 }\]\[=\frac{ -2 }{ 2 }= -1\]

Answer 3

Ok the last part is asking what is h(8).
Just plug 8 in for t :D

Answer 4

oh the 20, sorry lemme bcak up :D

Answer 5

\good work zepdrix

Answer 6

so you've gotten the formula this far:
h(t)=-t+b

So you can use some of your previous information to solve for b.
Plug in the height and time (3,17), and solve for b.

Answer 7

So this will help me get 20

Answer 8

I don't understand

Answer 9

so plugging in 3 and 17 gives us this equation
17=-(3) + b
b= 17 + 3 = 20

giving us an equation:
h(t)=-t+20

Then for your last part, find h(8)

Answer 10

it is a line, an equation can be written in the form:
y=mx+b

If you'll see from my previous notes, we found the slope of the equation (the m value) to be -1.

Answer 11

never mind i understand