Question

a line of best fit is drawn for the set of points shown on the graph. which point is an approximate extrapolation for x = 30 from the line of best fit? (23, 30) (30, 38) (44, 30) (30, 72)

Explanation:

Step1: Use regression equation

Given \( y \approx 1.14x + 3.805 \)

Step2: Substitute \( x=30 \)

\( y = 1.14(30) + 3.805 \)

Step3: Calculate y-value

\( 1.14 \times 30 = 34.2 \); \( 34.2 + 3.805 = 38.005 \approx 38 \)

Answer:

B. (30, 38)