Idea of Combo Chart Icon
A set of five rectangles lined up side by side with each rectangle varying in different height. Above the rectangles represent a line that isn't straight, but rather, changes above each rectangles based on how much each rectangle has changed in height comparative to the one next to it. At each point, there is a circle, or dot, that represents a marking point for each rectangle data point. Overall, the line shifts upwards in correlation with the height of the rectangles.
This is the Combo Chart icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.