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 Combo Chart icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.