Beth records the height of a plant for 8 weeks and creates a scatter plot of the data. what is the equation of the line of best fit? what will the plant’s height be in 20 weeks?
a) the equation is y = 2x + 5, and the height is 40 inches.
b) the equation is y = -2x + 5, and the height is 35 inches.
c) the equation is y = 2x, and the height is 40 inches.
d) the equation is y = 2x, and the height is 35 inches

Option: C is the correct answer.

  C) The equation is y = 2x, and the height is 40 inches.

We could clearly observe that the line of best fit passes through the point (0,0) and (20,40)

We know that the equation of a line passing through point (a,b) and (c,d) is calculated by the help of the formula:

Here we have:

(a,b)=(0,0) and  (c,d)=(20,40)

Hence, the equation of line of best fit is:

                  Hence, the equation is:

                         y=2x

Also when x=20 we have:

                     y=40

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490