00:01
In this question, we're given a vine maple is growing.
00:05
I'm going to let i be the height of the plant at time w, where w is in weeks.
00:13
So we're given one month after it's planted.
00:16
So when w is four weeks, there's one month, and w goes to four.
00:24
He has grown 8 .2 inches, so i equals to 8 .2.
00:30
So as an ordered pair, we can write it as 4, 8 .2.
00:36
Next, after 9 weeks, so when w equals to 9, it's grown 12 .2 inches, so i is 12 .2.
00:49
So as an order pair, it will be 9, 12 .2.
00:56
Part 1, want to find the slope.
00:58
The slope will be the gradient, and that will be taking y2 minus y1 over x2 minus x1.
01:09
That's the formula for gradient.
01:12
And that will be 0 .8.
01:15
Next, want to find the initial value of the function...