Question

the equation for the line of best fit is y = 1.8x + 1. according to the equation, which of these statements is true? labrador retrievers typically weigh about 1.8 pounds when they are born. labrador retrievers typically weigh about 1 pound when they are born. labrador retrievers typically weigh about 25 pounds when they are 16 weeks old.

Explanation:

Step1: Recall the slope - intercept form

The equation of the line is $y = 1.8x+1$, where $y$ is the weight in pounds and $x$ is the age in weeks. In the slope - intercept form $y = mx + b$ ($m$ is the slope and $b$ is the y - intercept).

Step2: Analyze the y - intercept

When $x = 0$ (at birth, age = 0 weeks), we substitute $x = 0$ into the equation $y=1.8x + 1$. Then $y=1.8\times0 + 1=1$. So Labrador retrievers typically weigh about 1 pound when they are born.

Step3: Analyze the other statement

For the statement about 16 - week - old Labrador retrievers, substitute $x = 16$ into the equation $y=1.8x + 1$. Then $y=1.8\times16+1=28.8 + 1=29.8
eq25$.

Answer:

Labrador retrievers typically weigh about 1 pound when they are born.