Question

If a data set haas a regression line equation of y=3x+15, what is the predicted values at x=2

Answer 1

X = 21
if you put in 2 for x you:
1. multiply 3 and 2 to get 6
2. and you then add 6 and 15

y = 3(2) + 15
y = 6 + 15
y = 21

hope it helps :)