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Algebra
Pregunta

A doctor collected data to determine the associati...

A doctor collected data to determine the association between age of an infant and its weight. She modeled the equation \( y = 1.25 x \) \( + 7 \) for the line of best fit. The independent variable, \( x \) , is time in months and the dependent variable, \( y \) , is weight in pounds. What does the \( y \) -intercept mean in this context? 

A) The infant's starting weight is \( 7 \) pounds.

 B) The infant's starting weight is \( 1.25 \) pounds. 

C) The infant's weight increases by an additional \( 7 \) pounds for each month. 

D) The infant's weight increases by an additional \( 1.25 \) pounds for each month. 

Answer

A

D

Solución
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