Question

puppy litters
the equation for the line of best fit is ( y = - 1.25x + 18 ). according to the equation, which of these statements is true?
in a litter of 10 puppies, the average birth weight would likely be about 4 ounces.
in a litter of 7 puppies, the average birth weight would likely be about 9 ounces.

Explanation:

Step1: Substitute \(x = 10\) into the equation \(y=-1.25x + 18\)

$$y=-1.25\times10+18$$
$$y=-12.5 + 18$$
$$y = 5.5$$

Step2: Substitute \(x = 7\) into the equation \(y=-1.25x + 18\)

$$y=-1.25\times7+18$$
$$y=-8.75+18$$
$$y = 9.25\approx9$$

Answer:

In a litter of 7 puppies, the average birth weight would likely be about 9 ounces.