Question

Question 30:

The weight of a puppy was measured when it was born and each week for the next four weeks.

The scatterplot shows the weight, y, in pounds, of the puppy x weeks after it was born and the line that best fits the data.



The equation shown can be used to represent the line that best fits the data: −8x+4y=8


Use the drop-down menu to make a prediction about this situation based on the equation.

(2 points)
The puppy will gain
pounds per week.

The puppy should weigh about
pounds after 7 weeks.

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Answer 1

The slope is 2, so the puppy will gain 2 pounds per week.

After 7 weeks: y = 2 + 2(7) = 16, so about 16 pounds.