what is the slope of a horizontal line
{"Image DocumentName": "What is the slope of a horizontal line?", "Image ImageDescription": "The line doesn\u2019t rise! All horizontal lines have a slope of 0.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}