Question

the equation for the line of best fit is $y = 3x + 1$. according to the equation, which of these statements is true?
for each additional child at story hour, about 3 more books get checked out.
for every 3 additional children at story hour, about 1 more book gets checked out.

Explanation:

The line of best fit is in slope-intercept form \(y = mx + b\), where \(m\) is the slope. Here, \(m = 3\), meaning for each 1-unit increase in \(x\) (additional child), \(y\) (books checked out) increases by 3. Thus the first statement is true.

Answer:

For each additional child at story hour, about 3 more books get checked out.