8© 2014 CPM Educational Program. All rights reserved.Core Connections Integrated ILesson 2.1.42-40.a:m=53,b= (0, –4)b:m=−47,b= (0, 3)c:m= 0,b= (0, –5)2-41.a:m=–2b:m= 0.5c:undefinedd:m= 02-42.a:correctb:7.89×104c:3.15×103d:correct2-43.a:4b:16c:y=4x+16d:It would get steeper.2-44.a:While walking double (or triple) the distance, they would encounter double (or triple)the number of dogs. If they walked zero blocks, they would encounter zero dogs.Thedogs in the area are evenly spread out along the blocks.b:17 dogs12 blocks=xdogs26 blocks;x≈36.83 so 37 dogs would be reasonable.c:≈1.42 dogs per blockLesson 2.2.12-47.A very strong positive nonlinear association with no apparent outliers.2-48.See graph at right.The number of people must be wholenumbers, and Mikko probably did not keep track of parts ofburgers, so the points should not be connected; that is, there isno possible data between the points. If a line is drawnto model the trend, it should be straight rather than go throughall the points.