Shanti wrote the predicted values for a data set using the line of best fit y = 2.55x – 3.15. she computed two of the residual values.

what are the values of a and b?

a = 0.4 and b = –0.15
a = –0.4 and b = 0.15
a = 8.6 and b = 14.25
a = –8.6 and b = –14.25

What is the product? (x2+3y+7) [yy+1)

Need on this geometry question. explain how you did it.

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?