A scientist created a scatter plot to display the height of a plant over a 12-day period. Which is the equation of the trend lin
e that is shown
1 answer:
Answer:
y = (4/7)x + 1/7
Step-by-step explanation:
In the picture attached, the plot is shown.
The trend line pass through points (5, 3) and (12, 7). Its slope is:
m = (y2 - y1)/(x2 - x1) = (7 - 3)/(12 - 5) = 4/7
The general equation of a line is:
y = mx +b
Replacing with the coordinates of one of the points and with the slope, we get:
3 = (4/7)5 + b
b = 3 - 20/7
b = 21/7 - 20/7
b = 1/7
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