What is the value of $y ^ { \prime }$ when $x = 3$, if the equation of the regression line is $y ^ { \prime } = 23.1 - 3.8 x$ ?
A) 11.7
B) 4.73
C) 5.29
D) 34.5

Question

Quizplus · Accepted Answer

To find the value of $y ^ { \prime }$ when $x = 3$, substitute $x = 3$ into the equation $y ^ { \prime } = 23.1 - 3.8x$. This gives $y ^ { \prime } = 23.1 - 3.8(3) = 23.1 - 11.4 = 11.7$.

What Is the Value Of y′y ^ { \prime }y′ When x=3x = 3x=3

What Is the Value Of $y ^ { \prime }$ When $x = 3$