Question

babies need a lot of sleep, but as people get older, the amount of sleep they need decreases. teenagers need less sleep than children, and adults need less sleep than teenagers. which graph could show the average amount of sleep needed in relation to age?

Explanation:

Step1: Analyze the relationship

The problem states that as age (x - axis) increases, the amount of sleep needed (y - axis) decreases (babies to children to teenagers to adults). So we need a graph where \( y \) decreases as \( x \) increases, and then maybe stabilizes.

Step2: Compare the two graphs

• First graph: The \( y \) - value (sleep needed) starts high (for babies) and decreases as \( x \) (age) increases, then becomes constant (which can represent adult sleep needs stabilizing).
• Second graph: The \( y \) - value is constant then increases, which is opposite to the described relationship (sleep should decrease with age, not increase after a point).

Answer:

The first graph (the one with the curve decreasing and then flattening)