Write an equation for the line of best fit based on the trend line drawn. Click Here for Help Video

Question

y = x - 49

Based on the trend line (not the equation) what is the expected value of y when x =
72
72?

Answer 1

To find the expected value of \( y \) when \( x = 72 \) using the equation of the line of best fit \( y = x - 49 \):

Substitute \( x = 72 \) into the equation:

\[ y = 72 - 49 \]

Now, calculate:

\[ y = 23 \]

So, the expected value of \( y \) when \( x = 72 \) is \( 23 \).