Acoal car on a train weighs 30 tons plus 1 ton per cubic yard of coal x that it carries. the total weight of a coal car is: f(x) = x + 30. how will the graph of this function change if the coal car weight is changed to 26 tons? the line will shift vertically up by 4 tons. the line will shift vertically up 26 tons. the line will shift vertically down by 4 tons. the line will shift vertically down by 26 tons.

Given are five observations for two variables, x and y. xi 1 2 3 4 5 yi 3 7 5 11 14 which of the following is a scatter diagrams accurately represents the data? what does the scatter diagram developed in part (a) indicate about the relationship between the two variables? try to approximate the relationship betwen x and y by drawing a straight line through the data. which of the following is a scatter diagrams accurately represents the data? develop the estimated regression equation by computing the values of b 0 and b 1 using equations (14.6) and (14.7) (to 1 decimal). = + x use the estimated regression equation to predict the value of y when x = 4 (to 1 decimal). =