1. Prove parallel lines have the same slope. Use lines f and g. Line g is a vertical translation of line f. (a) Since line g is a vertical translation of line f, how does this support that line f and line g are parallel? (b) What is the slope of line f? Show your work. (c) What is the slope of line g? Show your work. (d) If you were to add a third line to the graph, line h, which is a vertical translation of line g 3 units down and point A’’ is the image of point A’. What are the coordinates of point A’’?