caption: Course Slope of a Line.
exif: {"Image DocumentName": "Course Slope of a Line.", "Image ImageDescription": "Recall that two parallel lines have the same slope. The slopes of two perpendicular lines are negative reciprocals of each other.", "Image XResolution": "300", "Image YResolution": "300", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}