Section 1.3
Question 98
See attachment.
I see two points in the form (t, y):
(1, 970) and (2, 1270)
I need the slope m.
m = (1270 - 970)/(3 - 1)
m = 300/2
m = 150
I need the point-slope formula.
y - y_1 = m(t - t_1)
I need one of the points and m.
y - 970 = 150(t - 1)
y - 970 = 150t - 150
y = 150t - 150 + 970
y = 150t + 820
Part (a) has been completed.
Part (b)
The slope is 150 but I don't know what it tells me about weight gain.
Do you know?
Part (c)
Let t = 2
y = 150(2) + 820
y = 300 + 820
y = 1,220
The average brain weight is 1,220 grams.
You say?
A. Is this a linear extrapolation or linear interpolation?
B. What's the difference between the two mentioned in A?
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