caption: the graphing functions for the linear equation
exif: {"Image DocumentName": "Graphing an Equation y = 3x -1", "Image ImageDescription": "The slope is 3, use the slope to plot the second point. The y-intercept is -1, so plot point (0, -1) Draw a line through the two points.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}